It is not possible to test for pregnancy seven days after intercourse because even if you want to take a blood test to detect pregnancy, you have to wait eight days after intercourse before you can take a blood test for human chorionic gonadotropin, which is a very short period of time to test for pregnancy. If you want to take a pregnancy test by means of a stick, it will take longer, and it is recommended that you wait for about twelve days after intercourse before you can take the test. This is because it takes about twelve days for the sperm to reach the mother’s bloodstream and the urine after union with the egg. The accuracy rate will be greatly increased if you choose morning urine as much as possible, and some hospitals require fasting for the HCG test.