My girlfriend told me that she did not get her period last month, currently a little over 3 weeks late, and im worried she could be pregnant. We try to be very safe. She is on the pill and we are not having sex, but we do dry hump. One of us is always in our underware, usually both of us. Also i dont touch my self and she doesn't touch herself while we make out. I didnt think it would be possible for here to get pregnant but i dont know any other way she wouldnt get her period. She also said that this is the first time she has had nothing at all. She is very health conscious and works out about once or twice a week. She is usually under a lot of stress and last month may have been a little worse than usual but nothing that either of us thought was bad enought for a missed period. What should we do?