What do you think? Please

So i had my period for 5 days and i had sex 2 times 2 days before my period ended, then for 3 days after period ended i started spotting like lines,brown lines and when i cleaned myself it looked kinda pinkish. Then the week later i started feeling weird and different i have been with nausea,insomnia,my nipples are sore and my boobs feel fuller and perkier and i have never felt them like that and i have been craving salty stuff, and i feel tired and sometimes i use the bathroom too much is there any posblt that im pregnant?? Or this is normal? My period is supposed to come in 8 days im waiting to take a test but i have been wondering myself im kinda scared because im 18 and im in university and if i am idk what to do with my family they will be really mad at me.