Possible pregnancy

So two weeks ago I had sex with my boyfriend without protecting. Ever since then I’m scared that i might be pregnant, he didn’t cum inside me but when I would give him a hand job and he will cum we would clean it up and just wait a couple minutes and then have sex again. I recently stared to get like brown spotting so idk If that’s because my body is changing because of the sex or am i pregnant?? Please help and sorry if it’s confusing