It takes 5-7 days for the sperm and the egg to combine and settle, and the combination time will be different for each person, but not more than a week. The sperm and the egg combine in the juxtaposition of the fallopian tube, and then are transported to the uterus to settle, which will take 5-7 days, and you can go to the hospital to have blood drawn to check the value of human chorionic gonadotropin in the blood after 7-10 days of coitus, which will determine whether you are pregnant or not. If the pregnancy does not implantation will occur biochemical pregnancy leads to abortion, causes the occurrence of biochemical pregnancy, consider the fertilized egg is not well developed, may be the fallopian tube problems, endometrial problems, etc., it is recommended to go to the hospital regularly for examination, under the guidance of the doctor to find out the problem, timely and reasonable treatment. In the women’s ovulation in the same room the chances of pregnancy, preparation for pregnancy before the need for a comprehensive medical examination, only to the body after the conditioning can be pregnant in order to avoid the cause of miscarriage.