Okay, so about a little over a week ago I had sex with the guy I was talking to. He says that he can't have kids and that he "shoots balnks". Well he says he thinks he pulled out in time, but I'm not on birth control. He hardly talks to me anymore and I have yet to have my period and he won't buy a test. I'm scared because I'm only 17 and hes 22 and my parents don't know...