If you want to determine whether you are pregnant or not, you can go to the hospital for relevant tests, as follows: 1. Blood tests can be performed, generally after intercourse, if a woman is pregnant, the HCG in her body will keep changing, and at first there will be an exponential increase in HCG, so about 7-10 days after intercourse, you can go to the hospital for a blood HCG test to help determine whether you are pregnant, and you can also perform other routine tests. If you don’t want to have a blood test, you can go to the hospital 1 week after your period is postponed and have a urine test, which can determine whether you are pregnant or not.