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.
While 40 weeks is a full term pregnancy, many OB/GYNs consider a pregnancy full term and safe to deliver between 38-40 weeks of gestation. The risk of complications during and after delivery is much lower after a pregnancy has reached the 38th week.