Condom slipped off??? Help!

Im not too sure if this is the right group to post in so I apologise if it’s not ☺️

So earlier today I had sex with my boyfriend (I was on top) and as I was getting up (he came in the condom already) the condom started coming off. Luckily my boyfriend stopped it but his cum did leak onto the bed, however because I was on top and there were no holes, rips or tears in the condom I don’t think there would’ve been any in me. He said that when he pulled it out it wasn’t stuck in side of me and the base part was out and not kind of stuck. We use just condoms as our only contraceptive and I’m really stressing out. I don’t want to take plan b if I don’t have to, I asked my boyfriend and he said he isn’t worried as he checked everything and it went over him rather than me but I wanted to post here to see if anyone had any experiences of this/any advice.

Please help!