I didnt want to but he continued. Questions!!!

Ok so I was at this party and I got drunk. Smh at myself. Anyways I went outside to make a phone call and this guy came out behind me. Yes I do kno him but only like "hey.how u doin? ok bye". So like he asks me what im doing then asks me if I want him to leave. I say no cuz I rlly didnt care. Next thing I kno he is grabbing me around my waist and kissing me on my neck. I let him do it cuz it felt good, simple as that. Next thing I kno we're walking (he is still kissing me). I didnt care becuz we were in front of a building so Im like 'Whats gonna happen? nothing right?' WRONG. Somehow during the walk he managed to take his penis out. I had a mini skirt so it was easy to lift and push my panties the side. He starts pushin himself in. Im a virgin so it obviously hurt. I pushed him off cuz it hurt AND becuz I didnt hink it would go that far. I didnt WANT it to go that far. He gets back inside me and starts pushing in again, I push him off again and he starts AGAIN. Oh yeah and he has me against the wall on the side of the building. Anyways finally someone comes out the front and is yelling my name and the guy backs off and I walk around the building like nothing happened. I didnt tell anyone and I dont plan on it. But the next morning I found two big drops of blood on my panties. Now my questions...

1.Ive heard of precum and I mean Im guessing I would have felt it, if it had happened but since its not as much as actual cum is it possible that it could have happened without me knowing?

2. I dont THINK he went all the way in but did he still take my virginity?

3. There was blood but since he might not have went all the way in is there a possibility that I will bleed when I have sex with a guy sometime in the future also?