Sometimes I masturbate before I go to sleep at night. Usually nothing is wrong, but sometimes (and this always occurs at night, I've found) after I masturbate, a few minutes later I have to urinate. And when I do, it is usually very painful. The feeling doesn't pass either. My scrotum usually gets very tightened up, and there is painful feeling above my crotch. Usually I just sit there, drink some water until the feeling goes away. ANY idea what this is?

1) I've always used condoms combined with a sponge for birth control. That worked well because if anything happened with the condom, there was always a backup — it made me feel safer. Then I get to New York, I go into three drug stores, and none of them have sponges. Now what? I don't want to rely on just condoms, I don't want to take pills because the whole hormone thing is rather frightening, and a doctor said that diaphragms make you more prone to get urinary tract infections, which I get frequently. So what am I supposed to do? What's up with this total absence of sponges?

2) In exploring other forms of contraception, what is the reliability rate of the "sponge"?

My GF enjoys having my ejaculate on her (having me cum on her) and I was wondering if there was any way to increase the amount of ejaculate my body produces? I know I shouldn't compare myself to Porn stars, but they seem to ejaculate a lot.

I'm about to enter college and female, and, just recently, I've been attracted to a few girls. I also get aroused when I see two women having sex or kissing. I've had three boyfriends in high school, and I think I am still attracted to men. I would really like to experiment with girls to see if I am a lesbian or a bisexual. What should I do?