Confused & scared 😔

So me and my boyfriend were fooling around back in July. I was on top of him and he was like grazing the outside of my vagina with his penis. He never put it inside me bc I'm still a virgin and we just like to play around until we are actually ready to do it. But since then my period has been late for 8 day and this Never happens. I'm scared to tell my mom bc she doesn't even know about us. In our religion dating people who don't have the same religion is forbidden. My nipples have been sore (but that's normal for my period) I've had no cramping or nothing. I also been having these weird dreams like I'm just gonna take a pregnancy test and it's going to be positive. 😔 i dont know if me being stressed about it is causing it to just be late but I can't stand it. He never even put the damn penis inside 🙄 I'll be the first Virgin Mary congrats 😔