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 Monday 15th December, 2025

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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. 17th Mar 2025 1 Week
  2. 24th Mar 2025 2 Weeks
  3. 31st Mar 2025 3 Weeks
  4. 07th Apr 2025 4 Weeks
  5. 14th Apr 2025 5 Weeks
  6. 21st Apr 2025 6 Weeks
  7. 28th Apr 2025 7 Weeks
  8. 05th May 2025 8 Weeks
  9. 12th May 2025 9 Weeks
  10. 19th May 2025 10 Weeks
  11. 26th May 2025 11 Weeks
  12. 02nd Jun 2025 12 Weeks
Trimester 2
  1. 09th Jun 2025 13 Weeks
  2. 16th Jun 2025 14 Weeks
  3. 23rd Jun 2025 15 Weeks
  4. 30th Jun 2025 16 Weeks
  5. 07th Jul 2025 17 Weeks
  6. 14th Jul 2025 18 Weeks
  7. 21st Jul 2025 19 Weeks
  8. 28th Jul 2025 20 Weeks
  9. 04th Aug 2025 21 Weeks
  10. 11th Aug 2025 22 Weeks
  11. 18th Aug 2025 23 Weeks
  12. 25th Aug 2025 24 Weeks
  13. 01st Sep 2025 25 Weeks
  14. 08th Sep 2025 26 Weeks
Trimester 3
  1. 15th Sep 2025 27 Weeks
  2. 22nd Sep 2025 28 Weeks
  3. 29th Sep 2025 29 Weeks
  4. 06th Oct 2025 30 Weeks
  5. 13th Oct 2025 31 Weeks
  6. 20th Oct 2025 32 Weeks
  7. 27th Oct 2025 33 Weeks
  8. 03rd Nov 2025 34 Weeks
  9. 10th Nov 2025 35 Weeks
  10. 17th Nov 2025 36 Weeks
  11. 24th Nov 2025 37 Weeks
  12. 01st Dec 2025 38 Weeks
  13. 08th Dec 2025 39 Weeks
  14. 15th Dec 2025 40 Weeks

Most probable Date of conception

Sometime between

22 Mar
&
26 Mar