3 Weeks Pregnant
During week 3, your baby is undergoing rapid organogenesis. Every day, millions of new cells are forming the foundations of the brain, heart, and limbs. They are safely tucked away in the amniotic sac, receiving all their nutrition through the developing umbilical cord.
Baby's Development This Week
During week 3, your baby is undergoing rapid organogenesis. Every day, millions of new cells are forming the foundations of the brain, heart, and limbs. They are safely tucked away in the amniotic sac, receiving all their nutrition through the developing umbilical cord.
- The fertilized egg (zygote) divides rapidly as it travels to the uterus.
- By mid-week, the blastocyst implants into the uterine lining.
- The placenta begins forming from the outer cells of the blastocyst.
- The inner cell mass will become the embryo.
Your Symptoms at Week 3
You are still in the early stages of your journey at week 3. Your body is working overtime to produce the hormones needed to support the pregnancy, which can lead to symptoms like fatigue and nausea. It's important to prioritize rest and stay hydrated during this demanding time.
Light spotting is normal; use a panty liner. (mild)
Rest and use a warm compress. (mild)
Get extra sleep when possible. (mild)
When to Call Your Doctor
- Heavy bleeding (more than spotting)
- Severe cramping or one-sided pain (could indicate ectopic pregnancy)
- High fever
Week 3 Checklist
- ✓Continue prenatal vitamins (essential)
- ✓Avoid alcohol, smoking, and recreational drugs (essential)
- ✓Eat folate-rich foods (leafy greens, beans, citrus) (recommended)
- ✓Get 7-9 hours of sleep per night (recommended)