Scientists have found that the length of time a woman gets pregnant can vary by as much as five weeks. Although it has long been known that human gestation typically lasts between 37 and 42 weeks. But the reason for the discrepancy has previously been explained as flaws in the methodology for estimating maturities. The British \”Independent\” website reported on August 7 that according to calculations, a woman\’s expected date of delivery is the 280th day after the start of her last menstrual period, which is considered the best calculation method. But only 4% of women give birth on their due date, while 70%