U. S. Sen. Hillary Rodham Clinton, D-NY, and, former President Bill Clinton, blow out the candles on a cake at Hillary Rodham Clinton's 59th birthday party at Tavern on the Green in New York, Thursday, Oct. 26, 2006.
The unborn baby spends around 38 weeks in the uterus, but the average length of pregnancy, or gestation, is counted at 40 weeks. Pregnancy is counted from the first day of the womanâs last period, not the date of conception which generally occurs two weeks later.
Rethinking Full Term. Preterm labor can lead to a lot of problems for you and your baby. Facebook Pinterest Google Plus Text Email Comments. A newborn is more likely to be healthy if the mom's pregnancy lasts at least 39 weeks, according to a wealth of recent research. Doctors typically refer to term or full term as the period from 37 weeks to 41 weeks, but it may be time for a change, according to commentary in the journal Obstetrics & Gynecology. Babies who are born between 37 weeks and 39 weeks have a higher risk of health problems and delays in reaching developmental milestones.