Help!!

Ok so. My period is now 6 days late. I’ve had sex but we always use protection. I’ve been cramping really bad, felt sick, and I’ve had horrible back pain. Idk if I’m pregnant or if somethings just off? BUT I’m only 14 so it’s not like I can go to my parents. Someone please give me advice. I know I made an adult decision so there’s adult consequences but I really just need advice right now.

Edit: I’m not pregnant but I have no clue what’s wrong with me. It’s now 10 days late.