Me and my girlfriend are still virgins and we just rubbed our genitals against each other. But I got a little excited and tried to put it in and when i realized it only about my head was in. We were in the bathtub and I wasn't sure of it because we had no protection, so then I decided to pull it out right away. I know if it was pre cum then i'm safe, but I know i didn't cum, but I just have these little worries that I could have just ejaculated a little and now i'm worried if she is pregnant. I was still hard afterwards. Another problem going into my mind, is since i rubbed it can a small amount of sperm start to travel and find the egg? i fingered her later on but only 1/3 far, she still had her hymen so i didn't want to pop it yet.
Also afterwards, when she left, i masterbated and when i cumed there was alot of semen and some clear fluids.