First Trimester · Week 1 of 40
1 Weeks Pregnant
🌱
Size of a poppy seed
0.1 cm
Length
1
Trimester
Milestone: Conception occurs
Week 1Week 1 (3%)Week 40
Medical Information
The information on this page is for educational and informational purposes only. It is not medical advice and should not be used to diagnose or treat any medical condition. Always consult your healthcare provider (doctor, midwife, or nurse) before making any decisions about your pregnancy or your baby's health.
Baby Development at 1 Weeks
- Fertilization happens as sperm meets egg
- The fertilized egg (zygote) begins dividing
- The blastocyst travels toward the uterus
Symptoms at 1 Weeks Pregnant
- No symptoms yet — you may not even know you're pregnant
- Light spotting (implantation bleeding) possible
Tips for Week 1
- 1.Start taking folic acid (400–800 mcg daily)
- 2.Avoid alcohol, smoking, and raw fish
- 3.Schedule a preconception appointment with your OB
Week 1 Checklist
- Begin prenatal vitamins with folic acid
- Stop drinking alcohol and smoking