I'm unclear on how condoms are supposed to be effective in preventing female-to-male contamination during "plain" sex, I mean insertion of the penis into the vagina. Let me explain.

Latex is an effective barrier to virii and germs. I get that. As far as protecting the woman is concerned, I've no trouble believing it works. The STD virii or germs are present in the semen and/or pre-cum; these are "emprisoned" by the condom, don't get out, and don't get into contact with any part of the anatomy of the woman. She's protected. The sweat of the man does not contain these virii or germs and thus no risk with the rest of the skin-to-skin contact. But in the other direction, I don't quite get it.

I am 18 years old, and I am scared to touch my sperm. And when I do masturbate, I feel like I'm spreading it everywhere. If I even ejaculate or touch something with sperm on my hand, I am scared to death to touch it. Even 2 days later I feel like if I touch the spot I'll have sperm on me. I am miserable because I can't even masturbate, nor do I even enjoy having a wet dream. Can I really spread sperm or get it on me after touching something in two days, or will the sperm be dead?

Hi my name is Ramon. My question is: Me and my boyfriend were masturbating and the time of ejaculation, it shot into his eye. We rinsed it out and doesn't have pain anymore, but it does seem to be a bit swollen. What should we do?

Does anal sex make your hips and bottom larger?