My boyfriend and I just started getting physical in our relationship. He has fingered me and when I went to the doctors the other day they asked me if I was sexually active. I am still a virgin but I wasn't sure what to say. So if I have been fingered, am I sexually active?

Is there any way to see if the girl is still a virgin? By looking at her face closely? Or any changes in her?

If you have never had any sexual encounters of any kind before is it possible to have an STI?

What happens if I have sex more than once in one day?

My boyfriend recently started kissing my breasts and sucking on them. How far is that? Is that considered "sex", first base, second, third, or fourth. By the way, what do they all stand for?

I'm totally confused about my relationship, where it's going, I mean. I'm 14 years old and I have a 16 year old boyfriend, he's turning 17 in a few months. Since he's older, I know he has more sexual feelings and things like that, but I don't think I understand completely. We always fool around...kind of sexually...but not completely. We haven't had sex yet, and I think he might want to. I really don't know if I'm ready, mentally. I think it might ruin the relationship, I don't know what to tell him, or what to do when we start fooling around again. I mean, I enjoy it, but don't know how far to go with it, or where to stop. I feel like I need to talk to him, but no words come out. Whenever we "fool around" he asks like, "Is this okay?" or "Do you want me to stop?" I always let him do whatever, I don't mind at the time. But later on I really regret it, and wish I would have said something. What should I do?