Overthinking and don’t actually know

Adriana

Last month the 8 I had sex during my period but supposedly nothing happened these month the 3 I was supposed to get my period but u haven’t yet I have taken 2 pregnancy test but they are both negative and my period don’t always comes when it’s supposed to be but the overthinking and scared that I don’t wanna be pregnant is in my mind and I just don’t know what to do