pregnant?

okay, so i have no idea where exactly to start, but the other day i noticed my boobs were pretty sore which is usual when i PMS but they seemed a bit more swollen to me, and now i’m getting really sick. i’m supposed to start my period soon, and i’m getting cramps but not as bad as my usual, and i’ve been throwing up non stop with diarrhea. i’m just wondering if this seems like pregnancy to anyone else or if i’m just paranoid. thanks!