Pregnancy Week by Week Guide

Detailed pregnancy week guide tracking your baby's development from conception to birth

Select Week

Week 1: The Beginning

Baby Size: Not yet conceived

Baby Development

This week marks the start of your menstrual cycle. Conception hasn't occurred yet, but this week is counted as part of your pregnancy timeline.

Mother's Changes

Your body is preparing for potential pregnancy. The lining of your uterus is shedding during menstruation.

Common Symptoms

  • Menstrual bleeding
  • Cramping
  • Mood changes

Tips & Advice

  • Take prenatal vitamins with folic acid
  • Maintain a healthy diet
  • Avoid alcohol and smoking

Important Milestones

First Trimester Milestones

  • Week 4: Implantation occurs
  • Week 8: Embryo becomes fetus
  • Week 12: End of first trimester

Second Trimester Milestones

  • Week 16: Gender may be determined
  • Week 20: Halfway point
  • Week 24: Viability milestone

Third Trimester Milestones

  • Week 28: Third trimester begins
  • Week 32: Bones harden, brain develops rapidly
  • Week 36: Considered late preterm if born
  • Week 37: Full-term pregnancy begins

Important Note

This information is for educational purposes only and should not replace professional medical advice. Always consult with your healthcare provider for personalized guidance.