Sex Questions

My boyfriend and i have been together 3 years and we finally decided to have sex for the first time in November. We’ve “done it” only like two times after that but he never goes all the way in and never cums and neither do I. He’s not circumcised and it’s uncomfortable every time he tries to put it in and he says he doesn’t want to hurt me and that’s why he never goes all the way in..... We were both virgins. The first time we actually did it, my period started acting weird and came late. Is that normal for your body/period to be changing after you have sex? My parents don’t know about it, but we’ve always used a condom. I don’t know how to tell my boyfriend to go all the way in and my period is still late. We tried to have sex again in the beginning of December and I’ve still not gotten my period. :-/ i’ve also posted this in like 3 different things to get some good answers :-( please help

UPDATE: i just got my period. not pregnant.👏🏼 gonna get bc soon though, thank you guys so much !!