Pregnancy Calculator
Understanding Pregnancy Timeline
Pregnancy is measured from the first day of your last menstrual period (LMP). A full-term pregnancy is 40 weeks. Gestational age is used to track fetal development.
Key Terms
- LMP: Last Menstrual Period
- Due Date: Estimated delivery date (LMP + 280 days)
- Gestational Age: Age of pregnancy from LMP
- Fetal Age: Actual age of fetus (LMP + 266 days)
💡 Tips
- Only 5% of babies are born on their due date
- Cycle length affects due date accuracy
- Ultrasound can adjust due date
- First trimester is weeks 1-12