The expected month of labor for an April pregnancy should be January of the following year. The expected date of delivery is the date on which the pregnant woman is expected to give birth, not the exact date of delivery, is generally based on the date of the last menstrual period of the pregnant woman after adding or subtracting the calculation, in which the month of the last menstrual period +9 or -3, the number of months of the expected date of delivery; and the number of days +7, for the expected date of delivery, so the month of the expected date of delivery for an April pregnancy should be in the January of the following year. The significance of the projected due date is that pregnant women can further determine whether the development of the fetus is in line with the gestational week, but it should be noted that this method of calculation is based on the premise of the pregnant woman’s menstrual cycle for 28 days for the projection, the due date is not the exact date of delivery, generally two weeks before and after the due date of delivery are normal.