hello doctors. i had sex during obvulation. my stomach began to cramp up on one side . then my period came for 3 days but my cycle was a week early and is normally 7 days with 5 heavy days and painful cramps. when the period came for 3 days i had the bad cramps. my cycle has been gone for a couple of days and I ate some ice cream and i felt like i was going to vomit but i didnt and my right side under my breast is cramping. am i pregnant ?