HELP.....

could being in a thong while a boyfriend was in boxers. I’m young and we weren’t planning on having sex because not gonna risk it. But I gave him a handjob and forgot to wash my hands but didn’t touch myself until about 2-3 hours later. And the other scenario is making out naked except boxers and a thong with pre cum coming out of his boxers but I never spread my legs or felt anything drip in me. Can I get pregnant? I’m really scared and I wanted to double check. And my period is 1 day late. I’m 15.