how many weeks in pregnancy

1 month ago 15
Nature

Pregnancy is typically measured as 40 weeks long, starting from the first day of the woman's last menstrual period (LMP) to the estimated due date. This 40-week period is divided into three trimesters:

  • First trimester: Weeks 1 to 12
  • Second trimester: Weeks 13 to 26
  • Third trimester: Weeks 27 to 40

It's important to note that a full-term pregnancy can range from about 37 to 42 weeks. Babies born before 37 weeks are considered preterm, and those born after 42 weeks are post-term. If you want, I can help you calculate the estimated due date based on a specific date!