You can conceive 1-2 days after intercourse during ovulation because the sperm fertilizes the woman’s body for 2-3 days, and the sperm will die if it doesn’t meet the egg for too long after ejaculation. The egg can be retained in the body for 1-2 days after discharge, and it takes 1-2 days for the sperm to combine with the egg for fertilization. It takes 6-7 days for the sperm and egg to implant, and it is only after implantation that human chorionic gonadotropin can be secreted, which means that pregnancy can be determined through blood tests for human chorionic gonadotropin only about 10 days after coitus. It is best to use ovulation test paper and ultrasound to see the development of follicles, and arrange for intercourse in time after having mature follicles. Ovulation should not be too frequent, so as not to overwork the pregnancy, through the examination to determine the pregnancy need to pay attention to rest, reasonable supplement folic acid, to prevent fetal neural tube malformation.