A week ago my girlfriend and I were having fun on my bed. My penis was out of my pants and my girlfriend had her pannies on. She slightly grazed up and I believe my genitila touched her pannies. I am not sure if I pre-cummed and if I did I don't believe it was while her pannies were over my penis cause they were over it only for a second or two. But If I did should I be worried?! Also she threw up a week later. Is that a sign of something? I have really been stressing.