Pregnancy projections of which day to conceive, need to calculate the ovulation period according to the menstrual cycle, only in the ovulation period intercourse pregnancy probability is higher. If the menstrual period is regular, from the 14th day before the next menstrual period is the day of ovulation, 1-2 days before and after the day of ovulation, the probability of pregnancy, according to the date of intercourse can be determined what time to get pregnant. If the irregularity of menstruation will affect the ovulation, can not accurately determine when to get pregnant, it is recommended to go to the hospital to do ultrasound, according to the size of the gestational sac to calculate the date of pregnancy, and then subtract 14 days as the time of conception, according to the last menstrual period to calculate, if you forget the last menstrual period, according to ultrasound of the size of the gestational sac to deduce the specific time of pregnancy. Pregnancy projected which day pregnant, generally due to the length of each woman’s menstrual cycle, so the projected date of pregnancy and the actual deviation between 1-2 weeks is very normal, during pregnancy to eat more nutritious food, which can promote the baby’s absorption, but also to do regular maternity checks.