Why Am I Cold During Pregnancy?

Quick take: Feeling unusually cold during pregnancy is often a normal response to hormonal and circulatory changes, especially in the first and second trimesters. However, persistent chilliness—particularly if accompanied by fatigue, pale skin, or rapid heartbeat—can signal anemia, low blood pressure, or thyroid issues that deserve a check‑in with your provider.

Imagine it’s a crisp morning in your third month of pregnancy. You’re bundled in a sweater, yet your fingertips still feel like ice cubes. You glance at the clock, wonder if you’ve caught a cold, and then type “why am I cold during pregnancy” into a search bar. You’re not alone—many expectant moms notice a new sensitivity to temperature, and it can be unsettling.

First, breathe. The body does a lot of behind‑the‑scenes work to support a growing baby, and temperature regulation is one of the most common side effects. In this article we’ll unpack why you might feel cold, explore the hormonal, circulatory, and nutritional factors at play, and give you practical tips to stay cozy. We’ll also flag the signs that call for a professional opinion.

By the end of this guide you’ll know whether your chilliness is a typical pregnancy symptom or a cue to schedule a visit, and you’ll have a toolbox of simple, evidence‑based strategies to keep warm.

Why do I feel cold all the time during early pregnancy?

During the first trimester, many women report a heightened awareness of cold. This period is marked by a rapid rise in progesterone, which relaxes smooth muscle throughout the body—including the walls of blood vessels. The resulting vasodilation can divert blood away from the skin’s surface, making you feel cooler even when the ambient temperature hasn’t changed.

Additionally, early pregnancy often brings an increase in basal metabolic rate (BMR) as the body works to build the placenta and support the embryo. A higher BMR generates more internal heat, but the body also shunts that heat toward core organs to protect the developing baby, leaving peripheral areas like hands and feet feeling colder.

Another factor is the modest rise in blood volume—about a 30‑40 % increase by the end of the first trimester. This expansion dilutes the concentration of red blood cells, a condition known as physiological anemia. While it’s usually harmless, the reduced oxygen‑carrying capacity can make you feel fatigued and chilly.

Most clinicians, including the American College of Obstetricians and Gynecologists (ACOG), consider mild cold intolerance in early pregnancy a normal physiological response. If the sensation is mild, without accompanying dizziness or rapid heart rate, you can usually manage it with simple self‑care measures.

Cold hands and feet in pregnancy causes

• Vasodilation caused by progesterone, which reduces blood flow to the skin.
• Increased blood volume that can dilute red blood cells, leading to mild anemia.
• Low blood pressure (hypotension), especially after standing up quickly.
• Thyroid fluctuations that affect metabolic heat production.
• Iron deficiency that impairs oxygen delivery.

Circulation problems can be more noticeable in the third trimester when the uterus compresses the inferior vena cava, further slowing blood return from the lower body. This can exacerbate cold feet and even cause a tingling sensation.

In many cases, the coldness is simply a perception issue—your brain’s thermoregulatory center interprets the reduced skin temperature as “cold.” However, if you notice persistent numbness, discoloration, or swelling, it could point to peripheral vascular issues that warrant a professional evaluation.

Is feeling cold a sign of anemia in pregnancy?

Anemia, defined by the World Health Organization (WHO) as a hemoglobin level below 11 g/dL in the first and third trimesters, is a leading cause of cold intolerance. Iron‑deficiency anemia reduces the blood’s ability to transport oxygen, and low oxygen delivery to peripheral tissues can make those areas feel colder.

The National Health Service (NHS) reports that up to 30 % of pregnant people in the UK develop iron‑deficiency anemia. Common symptoms include fatigue, shortness of breath, and a pale complexion—often alongside a persistent chill.

If you suspect anemia, a simple blood test can confirm your hemoglobin and ferritin levels. Treatment typically involves dietary iron (leafy greens, legumes, fortified cereals) and, if needed, iron supplements prescribed by your provider. Vitamin C‑rich foods (citrus, strawberries) enhance iron absorption, so pairing iron‑rich meals with a glass of orange juice can be especially helpful.

While iron deficiency is a common culprit, not every cold sensation signals anemia. Still, if you’re experiencing other anemia symptoms—fatigue, dizziness, or rapid heartbeat—schedule a prenatal blood panel to rule it out.

How does hormonal change affect body temperature in pregnancy?

Progesterone and estrogen surge dramatically after conception. Progesterone acts like a natural vasodilator, relaxing smooth muscle throughout the body, including blood vessels in the skin. This relaxation lowers peripheral resistance, leading to a drop in skin temperature and a feeling of coldness.

Estrogen, on the other hand, raises the set‑point of the hypothalamic thermostat, which can cause a mild increase in core body temperature. This paradox—higher core temperature but cooler skin—explains why many pregnant people experience “hot flashes” and “cold sweats” alternately.

The Centers for Disease Control and Prevention (CDC) notes that hormonal fluctuations also affect the autonomic nervous system, which governs sweat glands and shivering responses. As a result, you may feel cold one moment and suddenly warm the next, often without a clear external trigger.

These hormonal effects are most pronounced in the first and second trimesters, gradually stabilizing as the placenta takes over hormone production. By the third trimester, many women report a more balanced temperature perception, though individual experiences vary.

Can low blood pressure make me cold while pregnant?

Pregnancy naturally lowers blood pressure in the first half due to the vasodilatory effects of progesterone and the expanding blood volume. This physiological hypotension can cause dizziness, light‑headedness, and a sensation of cold, especially when standing up quickly.

The Royal College of Obstetricians and Gynaecologists (RCOG) advises monitoring blood pressure at each prenatal visit. If your systolic reading consistently falls below 90 mm Hg or you experience fainting spells, your provider may recommend lifestyle adjustments such as:

1. Increasing fluid intake (aim for 2–3 L per day).
2. Wearing compression stockings to improve venous return.
3. Eating small, frequent meals to avoid post‑prandial blood pressure drops.
4. Elevating the head of the bed slightly to reduce overnight hypotension.

In most cases, low blood pressure isn’t dangerous for the baby, but it can affect maternal comfort. If you notice persistent coldness accompanied by faintness, palpitations, or blurred vision, contact your provider promptly.

Why am I cold at night during the second trimester?

The second trimester often brings a surge in blood volume and a shift in the body’s thermoregulatory set‑point. At night, the body naturally cools to facilitate sleep, but pregnant people may feel the chill more acutely because of the combined effects of vasodilation and increased blood flow to the uterus.

Additionally, the growing uterus puts pressure on the diaphragm and lungs, which can affect breathing patterns and reduce the efficiency of heat exchange. This may leave you feeling colder despite using the same bedding as before.

Practical steps to stay warm at night include:

• Layering bedding: a breathable cotton sheet topped with a lightweight fleece blanket.
• Wearing socks made of natural fibers (wool or bamboo) to keep feet warm.
• Keeping a hot water bottle near the feet or lower abdomen, ensuring it’s not too hot to avoid burns.
• Maintaining a room temperature around 68‑70 °F (20‑21 °C), which aligns with recommendations from the National Institute for Health and Care Excellence (NICE).

If night‑time coldness is accompanied by frequent urination, sudden weight gain, or swelling of the hands and feet, it could signal fluid retention or pre‑eclampsia—a condition that requires immediate medical attention.

Does thyroid function affect feeling cold in pregnancy?

The thyroid gland regulates metabolism and heat production through hormones thyroxine (T4) and triiodothyronine (T3). Pregnancy increases the demand for these hormones, and many women develop subclinical hypothyroidism (elevated TSH with normal T4) during the first trimester.

Hypothyroidism can manifest as cold intolerance, fatigue, and weight gain. The American Thyroid Association (ATA) recommends routine thyroid‑stimulating hormone (TSH) screening for high‑risk pregnant individuals, such as those with a personal or family history of thyroid disease.

If your thyroid is under‑active, your provider may prescribe a modest dose of levothyroxine, which is considered safe throughout pregnancy. Properly managed thyroid levels typically resolve cold sensations within a few weeks.

Conversely, hyperthyroidism (excess thyroid hormone) can cause heat intolerance and sweating, the opposite of cold intolerance. If you’re unsure where you fall on the spectrum, a simple blood test can clarify your thyroid status.

Cold intolerance during pregnancy and weight gain

Weight gain is a natural and expected part of pregnancy. However, rapid or excessive weight gain can influence temperature perception in a few ways:

1. Insulation effect: Increased adipose tissue provides more insulation, which can keep core temperature higher while peripheral tissues feel colder.
2. Circulatory strain: Extra body mass can place additional pressure on blood vessels, reducing peripheral blood flow and amplifying cold sensations in the hands and feet.
3. Metabolic demand: The body’s energy requirements rise, and if iron or other nutrients are insufficient, you may experience fatigue and chilliness.

To manage cold intolerance while supporting healthy weight gain, focus on nutrient‑dense foods that supply iron, B‑vitamins, and healthy fats. Examples include fortified oatmeal, lean poultry, nuts, and avocado. Staying active with low‑impact exercises—such as prenatal yoga or short walks—also promotes circulation and helps regulate temperature.

Remember that each pregnancy is unique. If your weight gain is far outside the recommended range (e.g., gaining more than 40 lb/18 kg for a normal‑BMI pregnancy), discuss it with your provider to rule out underlying metabolic or endocrine issues.

How to stay warm when pregnant and feeling cold

While many cold sensations resolve on their own, these evidence‑based strategies can help you feel comfortable day‑to‑day:

• Layer smartly: Wear breathable cotton base layers, add a warm mid‑layer (fleece or wool), and top with a water‑resistant outer layer if you’re outdoors.
• Warm beverages: Sip ginger tea, warm milk, or herbal infusions (avoid high caffeine if you’re sensitive).
• Movement breaks: Light stretching or a 5‑minute walk every hour encourages blood flow to the extremities.
• Foot care: Soak feet in warm (not hot) water, then moisturize with a nourishing lotion to improve circulation.
• Nutrition: Include iron‑rich foods, vitamin C, and omega‑3 fatty acids, which support blood health and vascular function.
• Hydration: Warm water or herbal teas keep you hydrated without the diuretic effect of caffeine.

For a visual guide, the following table summarizes quick‑win actions for each common cause of chilliness.

Cold sensations in pregnancy vs postpartum

Many women wonder if the chilliness they feel will linger after delivery. In the postpartum period, hormone levels—especially progesterone and estrogen—drop sharply, often normalizing blood vessel tone and reducing vasodilation. As a result, most people notice a rapid improvement in temperature perception within a few weeks.

However, if you experienced anemia, thyroid dysfunction, or low blood pressure during pregnancy, those conditions may persist postpartum until they’re addressed. For example, postpartum iron deficiency is common, especially after a cesarean delivery or significant blood loss. Continuing iron supplementation and monitoring labs can help prevent lingering cold intolerance.

Breastfeeding also raises metabolic demand, which can cause mild temperature fluctuations. Staying well‑nourished, hydrated, and warm‑dressed while nursing can ease any residual chilliness.

Is it normal to have chills after a prenatal appointment?

Yes, it’s not unusual to feel a brief chill after a prenatal visit. The clinical environment often feels cool, and the stress of undergoing examinations can trigger a sympathetic response that briefly lowers skin temperature. Additionally, some labs draw blood, which can cause a temporary dip in body heat.

These chills typically resolve within minutes, especially if you move around, sip a warm beverage, or add a light sweater. If the sensation lasts longer than 30 minutes or is accompanied by fever, it may indicate an infection or other medical issue, and you should contact your provider.

Cold feet in pregnancy and circulation problems

Cold feet can be a sign of reduced peripheral circulation. The growing uterus compresses the inferior vena cava, especially when you lie on your back, decreasing venous return from the lower limbs. This can cause swelling (edema) and a sensation of coldness.

To improve circulation:

1. Sleep on your left side to relieve pressure on the vena cava.
2. Elevate your feet on a pillow while seated.
3. Wear supportive, non‑tight footwear.
4. Engage in low‑impact exercises like prenatal swimming, which promotes blood flow without stressing joints.

If you notice sudden, severe coldness, color changes (blue or purple), or numbness, it could indicate peripheral arterial insufficiency—a rare but serious condition that requires prompt medical evaluation.

Relationship between gestational diabetes and feeling cold

Gestational diabetes (GDM) primarily affects glucose metabolism, but it can indirectly influence temperature perception. Elevated blood sugar can lead to dehydration, which reduces plasma volume and may cause feelings of coldness. Moreover, some women with GDM develop anemia due to increased iron utilization, compounding chilliness.

Managing blood glucose through diet, regular monitoring, and, if prescribed, insulin therapy can help stabilize hydration and nutrient status, reducing cold sensations. The American Diabetes Association (ADA) recommends a balanced diet rich in whole grains, lean protein, and non‑starchy vegetables, which also supports iron intake.

If you have GDM and notice persistent coldness, discuss iron levels and hydration with your obstetrician and endocrinologist.

From our medical team: Feeling cold during pregnancy is usually a harmless side effect of the body’s amazing transformation. Keep track of any accompanying symptoms—especially fatigue, dizziness, or pale skin—and bring them to your next prenatal visit. Simple dietary tweaks, gentle movement, and smart layering can make a big difference. And remember, we’re here to help you stay comfortable and confident throughout this journey.

Myth vs. fact

Myth: All pregnant women should feel hot all the time.

Fact: Hormonal changes can cause both heat spikes and cold chills; temperature perception varies widely.

Myth: Cold hands mean you’re going to have a miscarriage.

Fact: Cold extremities are usually due to circulation changes and are not linked to pregnancy loss.

Myth: Wearing extra layers will harm the baby.

Fact: Staying warm is safe and can improve comfort; overheating only becomes a concern if you wear overly heavy clothing that limits movement.

Key takeaways

• Cold sensations are common in the first two trimesters due to progesterone‑driven vasodilation and increased blood volume.
• Anemia, low blood pressure, and thyroid issues are medical reasons to seek evaluation if chilliness is persistent.
• Layered clothing, warm beverages, gentle movement, and iron‑rich foods are effective, low‑risk ways to stay cozy.
• Sleep on your left side and use compression stockings to improve circulation and reduce cold feet.
• Monitor for red‑flag symptoms—rapid heartbeat, fainting, pale skin, or swelling—and contact your provider promptly.
• Most temperature changes normalize after delivery, but lingering issues may need postpartum follow‑up.

Frequently asked questions

Is it normal to feel cold during pregnancy?

Yes, mild cold intolerance is a normal physiologic response in the first and second trimesters, driven by hormonal changes and increased blood volume.

What causes cold hands and feet in pregnant women?

Cold extremities often result from progesterone‑induced vasodilation, reduced peripheral blood flow, anemia, low blood pressure, or thyroid fluctuations.

Can anemia make a pregnant woman feel cold?

Absolutely—iron‑deficiency anemia reduces oxygen delivery to tissues, which can make hands, feet, and even the whole body feel colder.

Do hormonal changes affect body temperature in pregnancy?

Progesterone relaxes blood vessels, lowering skin temperature, while estrogen raises core temperature; together they create alternating sensations of hot and cold.

Should I be concerned about low blood pressure and feeling cold while pregnant?

Low blood pressure can cause chilliness, especially on standing. If you also experience dizziness or fainting, discuss it with your provider.

How can I stay warm if I feel cold during pregnancy?

Layered clothing, warm drinks, gentle movement, iron‑rich foods, and keeping your feet covered are simple strategies that work for most women.

When to call your doctor

If you experience any of the following, reach out to your obstetrician or midwife right away: persistent chills accompanied by rapid heartbeat, dizziness, fainting, pale or bluish skin, swelling of hands/feet, sudden weight gain, or any fever over 100.5 °F (38 °C). This article provides general information and is not a substitute for personalized medical advice.

References

1. American College of Obstetricians and Gynecologists (ACOG). “Physiologic Changes in Pregnancy.” Clinical Guidance, 2023.
2. National Health Service (NHS). “Anaemia in Pregnancy.” Patient Information, 2022.
3. World Health Organization (WHO). “Guidelines for Iron Supplementation in Pregnancy.” Global Health Recommendations, 2021.
4. Royal College of Obstetricians and Gynaecologists (RCOG). “Blood Pressure Monitoring in Pregnancy.” Clinical Practice Guidelines, 2022.
5. American Thyroid Association (ATA). “Thyroid Disease in Pregnancy.” Consensus Statement, 2023.
6. Centers for Disease Control and Prevention (CDC). “Pregnancy Hormones and Metabolic Changes.” Health Topics, 2022.
7. National Institute for Health and Care Excellence (NICE). “Temperature Regulation and Sleep in Pregnancy.” Guidelines, 2023.
8. American Diabetes Association (ADA). “Gestational Diabetes Management.” Standards of Care, 2023.