So about three weeks ago I had sex. The first time he had a condom on but cummed inside it so for the second round he took the condom off and stuck it in. Which idk if there was cum on his penis or not... Now I am three days late on my period. So I took a test last night and because I was so nervous I put just a drop of pee on it and I got a negative

As soon as it popped up (less than 60sec) I threw it away. So this morning when I woke up I looked at the test again just because I still haven't got my period now it's showing a faint line.

What should I do? Could I even be pregnant??