hello, I was fooling around with my girl friend and now I am worried if that might be any problem. We did not have sex at all. But I might have ejaculated on her chest and rubbed bare penis around her vagina while she was wearing her undergarments. while I was rubbing I was not having any semen coming out of me. I did not penetrate her in any way. I am just wondering if I should be worried and is there any kind of preventative measure she can take now. Thanks.