Morning urine is most accurate when tested with a pregnancy test seven days after your period. However, if you want to accurately diagnose whether you are pregnant or not, you can go to the hospital to take a blood test for human chorionic gonadotropin HCG, usually more than seven days after sex on the day of ovulation can be accurately diagnosed. 1. pregnancy test: pregnancy test is to test for HCG in the urine, if the pregnancy is short, the HCG value in the urine can not reach a certain concentration, it can not be detected. It is usually more accurate to test with morning urine after 7 days of delayed menstruation. However, because each person has a different physical condition and ovulation time, the test time is also different. 2. Blood test for human chorionic gonadotropin HCG: After the sperm and egg meet, i.e., seven to ten days after coitus on the day of ovulation, a blood test for HCG can often be taken to show the reaction. If it’s time for your period, go to the hospital and take a blood test for HCG to accurately diagnose whether you’re pregnant or not. The pregnancy test has uncertainty, if you need to diagnose pregnancy, you need to go to the hospital in time to draw blood and other tests to confirm the diagnosis.