Pregnancy Calculator
Track your pregnancy progress, calculate key dates, and get personalized information about each week of pregnancy.
Pregnancy Overview
Pregnancy Progress
Key Dates
Due Date Range
Week 12 Details
👶 Baby Development
- Baby is about the size of a plum
- All vital organs are formed and starting to function
- Fingers and toes have separated
- Baby can make sucking motions
🤰 Mother's Changes
- Morning sickness may start to improve
- Energy levels might begin to return
- Uterus is growing above the pelvic bone
- Weight gain of 2-5 pounds is typical
💡 Tips for This Week
- Schedule your first-trimester screening if you haven't already
- Continue taking prenatal vitamins with folic acid
- Start planning your pregnancy announcement if desired
- Stay hydrated and listen to your body's needs
Upcoming Milestones
Understanding Pregnancy Calculation
Pregnancy is typically calculated as 40 weeks from the first day of your last menstrual period (LMP). This method is used because most women can more easily recall when their last period started than the exact date of conception.
Trimesters Explained
First Trimester: Weeks 1-13. Critical period for baby's organ development.
Second Trimester: Weeks 14-27. Often called the "golden period" with increased energy.
Third Trimester: Weeks 28-40. Final growth and preparation for birth.
Gestational Age vs. Fetal Age
Gestational Age: Measured from LMP, approximately 2 weeks longer than fetal age.
Fetal Age: Actual age of the developing baby from conception.
Doctors use gestational age for all pregnancy dating and milestone tracking.
Common Pregnancy Terms
EDD: Estimated Due Date
LMP: Last Menstrual Period
GA: Gestational Age
Term: Pregnancy reaching 37-42 weeks