Hi, my name is Taylor, and my boyfriend and I had unprotected sex. I was suppose to start my period yesterday and I'm a day late on it. But I always have irregular periods. I was wondering if vitamin C tablets or anything with vitamin C will cause me to have a miscarriage. I am only 16 and he is 17, we are really not ready to have a baby. And I know we shouldn't of even have sex without protection, but it just happened unexpectedly. We both have careers we want to become, and I got to a catholic all girls school and if I am pregnant and they find out, I'm kicked out automatically and I don't want to be. Just please give me answer on what I should do !