What are the risks of HIV infection for the passive partner of oral sex?

If one has a long-term partner and neither AIDS nor any other STD is a concern, is there any medical reason not to perform cunnilingus on a menstruating woman? My significant other is particularly horny during her period and would love cunnilingus at this time. I am willing but curious.

I am curious about double penetration (two penises in one vagina). Because of the increased friction, even if both men are wearing condoms, is there more of a risk that the condoms would break?

I've been having this problem with my girlfriend. Whenever we make out, I get the impression that she wants me to do something with her breasts... but I don't have the foggiest what to do.

I'm sure that they aren't there strictly for my enjoyment; so, what can I do with my girlfriend that would offer her some pleasure, as well?

I've tried other sources of information, but most other sources either concentrate solely on the vagina, g-spot, and clitoris, or they simply state that breasts are an erogenous zone and leave it at that.

I currently use NuvaRing for contraception. Because the ring slowly emits hormones into the body via the vagina, my partner and I are wondering whether he will have an unhealthy amount of contact with these hormones during oral sex. Thanks.

I am a well-adjusted late twenties male with a steady girlfriend. Lately, I have been increasingly fantasizing about various types of anal penetration. I have discovered that during masturbation, this brings me very intense pain/pleasure. Even though I think it may be satisfying to experiment with a vibrator or other objects inserted by my girlfriend, I find myself drawn toward trying the real thing (i.e., having anal sex with a penis). The problem is, I definitely do not consider myself homosexual and, in fact, the thought of the actual act with another man actually repulses me. Am I trying to have the real thing without going through a bisexual experiment or what?

I'm wondering if washing immediately and throughly after intercourse helps prevent pregnancy.