So idk if this will help but-

I'm 16 and last night my boyfriend and I had unprotected sex. The thing is, he doesn't know if he came inside of me or not. He came three different times, pulling out each time. There was nothing leaking out of me (that we noticed) and we saw the cum each time, not in me. He's unsure if he pulled out soon enough, though. He thinks he might have started and pulled out too late but he doesn't know for sure. My period was supposed to start today but it didn't?? I didn't feel him cum in me but I'm scared. It was my first time having sex and I'm not sure what to think. I don't know if I'm okay or not. I'm just waiting for my period now.