5 weeks pregnant
Trimester 1
Your baby is about the size of a sesame seed.
- Length
- 0.1 cm (about 0.0 in)
- Weight
- still too small to weigh
What is happening at 5 weeks
The heart and circulatory system are taking shape. You may only just be seeing a positive test.
Not sure exactly how far along you are? Find your estimated due date and follow your pregnancy week by week.
Sizes and weights are typical averages and vary from baby to baby. This is general information, not medical advice. Your provider is the best guide to how your own pregnancy is progressing.
Sources and further reading
These organizations offer trusted, in-depth guidance. Gentle Apps is independent and not affiliated with them.