My boyfriend and I have been trying to have sex and it just doesn't work. I'm a virgin and he isn't. I think he's too big for me. Or is it the position? Any suggestions?

I've identified as straight for my entire life, but recently been noticing that I may be attracted to girls as well. I'm thinking that I'm probably bi, maybe attracted 30% to girls, 70% to guys. What's so strange is that I went to an all-girls Catholic high school, and never found myself attracted to my schoolmates.

The thing is, I'm wondering if I'm attracted to girls, or just obsessing about my sexuality and therefore thinking that I'm attracted to girls because my obsessiveness makes me more aware of them. (I've had OCD symptoms before, so this is possible.) You see, I haven't had any major crushes on girls, but I think I could if I let myself see them romantically.

Then I'm wondering--if I am attracted to girls, which I probably am--is it worth coming out? I am definitely mainly attracted to guys, but I feel like I could be missing out on good relationships if I ignore this aspect of myself. But then, how would people view me? I go to a very liberal, accepting college, but what about my past roommates, for instance. We've seen each other naked, and it didn't mean anything to me, but would they think I had been attracted to them or something?

I'm thinking the easiest thing would be to change my "interested in" status on facebook. Then, if people felt like asking, they could, but I wouldn't have to tell people directly. I think my friends would be cool like that. But is it even worth the hassle? Am I making mountains out of obsessive molehills (to use a very mixed metaphor)? I do identify mainly as straight.

I have horrible menstruation. Horrible. The cramps make me cry and be nauseous (I've had to stay at home on more than one occassion for them and I NEVER miss school), the blood flow is relentless (7 days usually), and I get a severe headache and mild fever. I have a suspicion that it's genetic, considering how my mother once bled for 12 days. Exercise seems to help, but I was wondering what else I can do? I'm sick of feeling like this a week every month. I'm at the end of my rope!