Confused

So my period is due in 2 days and I usually don’t show signs that I’m going to start, but on my entire ovulation week I had intercourse several times without protection and since a couple days ago my stomach on the aides have hurt, my nipples have been severely sensitive, I’ve stayed tired and slept more than normal, mild pelvic cramps, and feeling bloated, I feel sick but don’t throw up, and I don’t know what could be wrong because I don’t want to assume I’m pregnant because I don’t think I can get pregnant but something is going on.... can anyone help?