All weeks

Second Trimester

Week 16 of pregnancy

Your baby is the size of an avocado.

Length: 11.6 cm / 4.6 in · Weight: 100 g / 3.5 oz

Baby at 16 weeks

  • Baby's nervous system maturing.
  • Translucent skin with visible blood vessels.
  • Toenails forming.

What you may feel

  • Possible quickening (first felt baby movements) — usually 16-22 weeks.
  • Growing bump.
  • Improved skin + hair (pregnancy hormones).
  • Possible backache.

This week’s checklist

  • 16-week midwife appointment.
  • Watch for first kicks.
  • Look into maternity clothing.

Key milestone

16-week midwife appointment (NICE NG201).

Doctor / midwife visits

NHS 16-week midwife visit — BP, urine, MSU, review.

Top foods this week

avocado

Is it safe?

salmon

Is it safe?

spinach

Is it safe?

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.