Should I take plan b?

hey!

so three days ago I️ had sex for the first time. We used a first condom but he wasn’t hard enough so we had to take it off. Then I️ gave him a blowjob and he put on a second condom. In the middle of having sex, he stops to finger me. I’m not sure if that’s a problem because I️ don’t know if he had any pre cum on his fingers from putting on the condom or just touching himself in general. Also before putting on each condom he used paper to wipe away the pre cum but I’m not sure if his fingers touched it. After sex, we check if the condom was leaking and it was fine. My period is very irregular, the cycle average is 41 days and I’m on day 43 of my cycle. But my last cycle was 52 days. Should I️ be worried and should I️ take plan b before it’s too late? Thanks so much!