Week 15 of Pregnancy: Baby Size and Development

Baby Size at Week 15: Your baby is growing rapidly and is now about the size of an orange or an avocado, measuring around 4 inches (102 mm) from crown to rump. Their skeletal system is developing, and their tiny bones are becoming harder and more defined.

Changes and State in the Mother’s Body: By week 15, you may notice that your baby bump is becoming more pronounced as your uterus continues to expand. Your weight gain may be more noticeable, and you might experience round ligament pain or mild backaches. Hormonal changes can also lead to changes in hair and skin texture.

Common Symptoms:

  • Increased appetite: Your growing baby requires more nutrients, leading to an increase in your appetite.
  • Heartburn: Hormonal changes can relax the valve between your stomach and esophagus, causing acid reflux and heartburn.
  • Leg cramps: Some women experience leg cramps or spasms, especially at night. Staying hydrated and stretching can help alleviate these cramps.
  • Shortness of breath: As your uterus expands, it puts pressure on your diaphragm, which may make you feel short of breath at times.
  • Nasal congestion: Hormonal changes can cause congestion and stuffiness, making it difficult to breathe through your nose.

Tips for Week 15:

  1. Stay active: Engage in low-impact exercises like walking or swimming to keep your body fit and maintain good circulation.
  2. Practice good posture: As your belly grows, maintain proper posture to alleviate backaches and improve overall comfort.
  3. Eat small, frequent meals: Opt for smaller, more frequent meals to help manage heartburn and prevent discomfort.
  4. Stay hydrated: Drink plenty of water to stay hydrated and support healthy blood flow to you and your baby.
  5. Start a pregnancy journal: Consider starting a pregnancy journal to document your experiences, thoughts, and feelings throughout this special journey.


  1. Is it normal to feel lightheaded or dizzy during week 15 of pregnancy?
    • Feeling lightheaded or dizzy can be normal during pregnancy due to hormonal changes and increased blood volume. However, if you experience severe or persistent dizziness, consult your healthcare provider.
  2. Can I continue to dye my hair during week 15 of pregnancy?
    • Most experts consider it safe to dye your hair during pregnancy, as only a small amount of the chemicals are absorbed into your bloodstream. However, opt for ammonia-free, low-chemical hair dyes and ensure proper ventilation.
  3. When should I start preparing for childbirth classes?
    • It’s recommended to start researching and enrolling in childbirth classes during the second trimester, around weeks 20-24, to ensure availability and ample time for preparation.

Disclaimer: Please note that our website is designed exclusively for entertainment purposes. Although we have confidence in our approach, we do not assert a specific accuracy rate since ongoing research continues to shape our methods.