I was suppose to start the 10th. We do it all the time and were unprotected. A condom has broke many times before but with a different guy but ive never been pregnant. I've been feeling really sick and on and off I've had bad cramps. Last month I changed my diet and started exercising more. I was going to wait til the end of the month to take a test. Could me not having my period be because of diet and exercise or I'm pregnant?