You are 3 weeks and 1 day pregnant!

You have 36 weeks and 6 days to go!

Your Due Date Countdown

Your baby is due on Friday 20th November, 2026

Share this:

Your baby is approximately the size of...

A pin head size
A pin head size
Share the size of your baby
Fun facts at three weeks
You:
  • Within hours of being fertilised, your egg will start to travel from your fallopian tube to your uterus. The fertilised egg will then divide into 16 identical cells.
Your baby:
  • Your baby is about 0.2cm (0.1 inches) in total length right now
  • Your baby weighs in at 0 grams

Your Pregnancy Weeks Dates Forecast

Trimester 1
  1. 20th Feb 2026 1 Week
  2. 27th Feb 2026 2 Weeks
  3. 06th Mar 2026 3 Weeks
  4. 13th Mar 2026 4 Weeks
  5. 20th Mar 2026 5 Weeks
  6. 27th Mar 2026 6 Weeks
  7. 03rd Apr 2026 7 Weeks
  8. 10th Apr 2026 8 Weeks
  9. 17th Apr 2026 9 Weeks
  10. 24th Apr 2026 10 Weeks
  11. 01st May 2026 11 Weeks
  12. 08th May 2026 12 Weeks
Trimester 2
  1. 15th May 2026 13 Weeks
  2. 22nd May 2026 14 Weeks
  3. 29th May 2026 15 Weeks
  4. 05th Jun 2026 16 Weeks
  5. 12th Jun 2026 17 Weeks
  6. 19th Jun 2026 18 Weeks
  7. 26th Jun 2026 19 Weeks
  8. 03rd Jul 2026 20 Weeks
  9. 10th Jul 2026 21 Weeks
  10. 17th Jul 2026 22 Weeks
  11. 24th Jul 2026 23 Weeks
  12. 31st Jul 2026 24 Weeks
  13. 07th Aug 2026 25 Weeks
  14. 14th Aug 2026 26 Weeks
Trimester 3
  1. 21st Aug 2026 27 Weeks
  2. 28th Aug 2026 28 Weeks
  3. 04th Sep 2026 29 Weeks
  4. 11th Sep 2026 30 Weeks
  5. 18th Sep 2026 31 Weeks
  6. 25th Sep 2026 32 Weeks
  7. 02nd Oct 2026 33 Weeks
  8. 09th Oct 2026 34 Weeks
  9. 16th Oct 2026 35 Weeks
  10. 23rd Oct 2026 36 Weeks
  11. 30th Oct 2026 37 Weeks
  12. 06th Nov 2026 38 Weeks
  13. 13th Nov 2026 39 Weeks
  14. 20th Nov 2026 40 Weeks

Most probable Date of conception

Sometime between

25 Feb
&
01 Mar