Still no more time I saw a small wet spot!!!! On my ass that he was humping What’s that mean
Sperm isn't magical, it doesn't just pop into your vagina as long as it's on your body. It needs to be ridiculously close to your entrance to manage to travel that distance. You also generally need a good amount of it too to get one to manage to penetrate the egg. And you also need to be in the fertile period of your cycle. Odds are very slim that you got everything at the right time and the right place with a tiny wet spot.
Just don't actually have unprotected sex and if you get that paranoid from some humping, either wait until you're old enough to understand what you're doing or at the very least, get some different contraception.