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The calculator will generate a detailed pregnancy schedule, including the estimated due date, based on your selected method.
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Schedule your pregnancy with the Pregnancy Calculator. This tool provides a complete pregnancy timetable from conception to delivery based on the last menstrual period (LMP), due date, conception date, IVF transfer date, or ultrasound test date. You can also get a detailed trimester chart to explore your pregnancy week by week, including potential risks and precautions for a healthy delivery.
During pregnancy, several factors are important to ensure a healthy outcome:
In the United States, the FDA classifies medications into Class A, B, C, D, and X based on safety during pregnancy. Drugs with the least risk to the fetus are Class A, while those with the most potential harm are Class X.
During pregnancy, nutritional demands increase for both mother and baby. For example, retinal development in the baby requires Vitamin B3, which is supplied via the placenta or breast milk.
The American College of Obstetricians and Gynecologists reports that regular aerobic exercise supports healthy pregnancy by delivering oxygen to both mother and baby and reducing the likelihood of C-section. See our exercise calculator for guidance.
Healthy, gradual weight gain provides essential nutrients for fetal development. The Institute of Medicine recommends the following based on BMI:
| BMI | Recommended Weight Gain |
|---|---|
| Normal (18.5-24.9) | 25-35 pounds |
| Underweight (BMI < 18.5) | 28-40 pounds |
| Overweight (25-29.9) | 15-25 pounds |
| Obese (>30) | 11-20 pounds |
Related: If trying to conceive, use our Ovulation Calculator to identify your peak fertility window.
If you know your conception date, add 266 days (38 weeks) to estimate the due date.
For IVF pregnancies, input your exact transfer date into the Pregnancy Calculator for a precise due date. In the U.S., over 250,000 assisted reproductive technology cycles result in more than 77,000 babies annually.
The World Health Organization states that a normal pregnancy lasts 38–42 weeks. The Pregnancy Calculator allows you to track your pregnancy week by week and monitor potential risks.
Yes. Variations in menstrual cycle length can shift the due date, as fertility and ovulation windows may change.
Use a pregnancy week calculator to track your pregnancy and milestones by trimester. Learn more about trimesters and milestones.
It can take up to 6 days for fertilization to occur after intercourse. Implantation of the fertilized egg usually takes 3–4 days.
Early symptoms around week 2 include missed period, tender/swollen breasts, and mood changes.
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