How long after you have sex can you take a at home pregnancy test?

If I took a at home pregnancy test already and it came up positive, then the next day I had sex, how many days afterward should I wait to take another? I know that the sperm stays inside the uterus and Fallopian Tubes for 3 days, should I wait the 3 days or longer?How long after you have sex can you take a at home pregnancy test?If you took a test that was already positive, you were already pregnant! There's no need to take another!How long after you have sex can you take a at home pregnancy test?On a home pregnancy test take one 3 days after you've had sex. If you miss your period take another one as this will prove if you are pregnant or not. i know this s my mother and father are both doctors.How long after you have sex can you take a at home pregnancy test?If you had a positive pregnancy test chances are very good you are pregnant, there's no need to keep trying.