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.
But, babies follow their own time-table. They come out only when they feel they are ready to do so. The minimum time period a baby spends inside its mother's womb is 38 weeks, but it can even prolong up to 42 weeks. Thus, a baby is delivered anytime between the 38th to 42nd week of pregnancy. Gynecologists often give a fixed date for the delivery, however, hardly 3-5% of women deliver exactly on their due dates.