Last menstrual period January 28th due date is November 5th, due date delayed or 2 weeks early delivery of the fetus are normal range. Women can project the due date according to their last menstrual period, the month of the last menstrual period is greater than 3 minus 3, less than 3 plus 9, the date plus 7, which comes out to be the time of the due date, the last menstrual period January 28th, the due date is January 15th. Not all pregnant women will deliver the fetus when they reach their due date. It is normal to deliver the fetus two weeks later or earlier than the due date, and try to deliver the fetus after 37 weeks to 42 weeks. Fetuses delivered before 37 weeks of pregnancy are preterm, and fetuses delivered after 42 weeks of pregnancy are term babies. It is important to do a good job of pregnancy checkups after pregnancy to avoid preterm or term babies.