
Baby is the size of a blueberry!
At week 13, your baby is growing rapidly. Essential development is taking place this week.
Baby's Development
During week 13, major developmental milestones are occurring. The neural tube is forming, and basic facial features are starting to take shape. Your baby's heart has begun to beat and can sometimes be detected on an early ultrasound.
Key developments this week include:
- Cellular division continues at a rapid pace
- The foundation for major organs is being laid
- Limb buds are beginning to emerge
Changes in Your Body
While you might not look pregnant yet, your body is working overtime. Hormonal changes are in full swing to support your growing baby.
Common symptoms this week may include:
- Fatigue and exhaustion
- Tender or swollen breasts
- Nausea or "morning sickness"
- Frequent urination
Nutrition Tip
Folic acid is crucial right now to help prevent neural tube defects. Ensure you're taking your prenatal vitamin daily.
Read more about pregnancy nutrition →Warning Signs
Contact your healthcare provider if you experience severe abdominal pain, heavy bleeding, or severe dizziness.
Emergency Warning
If you are experiencing a medical emergency, call your local emergency number immediately.
If you are in the US, call 911. If you are outside the US, contact your local emergency services.
The information provided on this website is for educational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a qualified healthcare provider with any questions you may have regarding a medical condition.

