Baby at 3 weeks
- The fertilised egg (blastocyst) reaches the uterus.
- Implantation begins around day 6-10 after ovulation.
- Cells are differentiating into placenta + embryo.
What you may feel
- Possibly nothing yet — implantation may not have happened.
- Light spotting in some women (implantation bleeding).
- Mild cramping.
This week’s checklist
- Continue folic acid.
- Pregnancy test will likely still be negative — too early.
- Avoid alcohol entirely from now.
Key milestone
Implantation — the blastocyst embeds in the uterine lining.
Doctor / midwife visits
No appointments yet.
Top foods this week
Educational only — not medical advice. Always consult your midwife or GP. Sources: NICE NG201 antenatal care, NICE NG207 inducing labour, NHS, RCOG. Read the full medical disclaimer.
Recommended picks
Prenatal pick
Ritual — Ritual Essential Prenatal
Choline + DHA + folate from methylfolate (not synthetic).
Prenatal pick
Nordic Naturals — Nordic Naturals Prenatal DHA (Strawberry Softgels)
Premium fish-oil DHA in strawberry softgels — gentle on the stomach.