About Pregnancy Calculator

Pregnancy is the period during which a fetus develops inside a woman's womb, typically lasting about 40 weeks from the first day of the last menstrual period (LMP). The Pregnancy Calculator helps estimate the due date and gestational age based on various methods, including LMP, conception date, or IVF transfer date.

How Due Date is Calculated

• Last Period (LMP): Due date = LMP + 280 days (40 weeks). Adjust for cycle length if not 28 days.
• Conception Date: Due date = Conception date + 266 days (38 weeks).
• IVF Transfer: Due date = Transfer date + 266 days (adjusted for embryo age).

Example

• If your last period started on January 1, 2024, and your cycle is 28 days, your estimated due date is October 7, 2024.
• If conception occurred on January 15, 2024, your due date is October 8, 2024.
• If IVF transfer was on January 20, 2024, with a day 5 embryo, due date is October 13, 2024.

Pregnancy Term & Management

Normal pregnancy lasts 37-42 weeks. Actual delivery may vary due to many factors. Less than 4% of births occur on the exact due date, but 90% occur within two weeks of it.

Pregnancy Management

• Medication: Consult your doctor before taking any medication during pregnancy.
• Weight Gain: Recommended weight gain depends on pre-pregnancy BMI. See guidelines for details.
• Exercise: Regular aerobic and strength exercise is often safe and beneficial, but consult your doctor if you have symptoms or complications.
• Nutrition: Proper nutrition, including folic acid and DHA, is essential for fetal development.

References

• Institute of Medicine. Weight Gain During Pregnancy: Reexamining the Guidelines.
• American College of Obstetricians and Gynecologists. Exercise During Pregnancy.