pregnant?

okay, i got sick in the middle of the night sunday night and felt like pure crap monday. i was just thinking stomach virus maybe? so i woke up today feeling fine, just cramping a little, but not like period cramps. like sharp stomach cramps. well i went on with my day and got sick again at around 11:30 this morning while at work. i’m not supposed to start my period until monday of next week. so is this just a stomach bug, or possibly pregnant?