Pregnancy Paranoia

Hi everyone this is my first time writing something here. Dont know if this is the right group but I just need some kind of encouraging or calming words. My boyfriend and I had a sexual interaction that didnt involve penetration.... it was more of like a humping situation where he was using my thighs as stimulation to get off. He had a condom but it slipped off right as he came. I think some semen might have slipped in and I'm worried about it. I only recently started the combination pill and when that happened i was on day 7. After he came i panicked and thought that i should wash it out(??) to lessen the possibility of pregnancy. i know that wont help but it was all i could think of in the moment. i think it was probably only a small amount that may have gotten in but there's still so much sperm in so little amount. i took an EC pill the day after due to my paranoia but i still cant get it out of my head and im super paranoid to the point i cant sleep. Is there reason to worry or am I okay? Neither of us are even remotely ready to have a kid, and this would be a bad situation for us. We love kids but cant afford to have one of our own right now.