You can have intercourse within 4-12 hours after ovulation to have a 60% chance of getting pregnant. You can elevate your hips for half an hour after intercourse to help you conceive. After intercourse, you can clean the genitals of both partners to avoid cross-infection and vaginal inflammation, and to avoid any factors that may affect the inability to conceive. You can buy early pregnancy test about 12 days after intercourse to rule out pregnancy. If you are pregnant, you can start counting from the first day of your period and go to the hospital for an ultrasound examination around 42 days to determine whether you have an intrauterine or ectopic pregnancy, and depending on the situation, you can make an appointment for the next maternity test. If you are not pregnant, you should also relax and not be overly nervous and stressed to avoid the inability to conceive.