I ended a relationship about a year ago. I have always seemed to have a yeast infection when I went to doctors before. In my relationship I had went to the doctors before because of discharge and just told them I didn’t need to really be looked at because I know what it is. Well at the end of my relationship I went to the doctor to get a whole check-up. Come to find out that what I thought was a yeast infection turned out to be trichomoniasis. I think I have had it for a couple of years now. I have gone to be treated for it two times. Each time it would go away and then come back. I was wondering if it was because I had it for such a long time?

I have a latex sensitivity, but would like to perform safer oral sex. Are lubricants on non-latex condoms harmful if ingested? I can't seem to find non-latex, non-lubricated condoms anywhere.

1) Can you get AIDS from a mosquito bite? I heard you can't, but I'm really paranoid about this. Actually, it wasn't a bite — I squashed the bug and all the blood in it splattered everywhere and then here I am with someone's blood on a cut in my finger. HELP! I'm really freaking out. I don't know if I should get tested or not again, because I did get tested before (negative), but the anguish of waiting for results was horrible. Maybe I'm just ultra paranoid?

2) Is it possible to contract AIDS by handling raw bloody meat?

I was wondering about the depth of the vagina. I've read statistics that say that the average vagina is only 3 to 4 inches deep. This seems way too small to me, since the average penis is considerably longer than that. Wouldn't that mean that most penises would crash into the cervix repeatedly during intercourse? Since this obviously doesn't happen, my question is this: does the vagina actually elongate during intercourse to accommodate the entire length of the average penis?

Dear Alice, 

I take Valtrex daily to protect me from cold sores I get on my face. I haven’t had one since I started taking it a few years ago. My partner gets cold sores on his mouth and has recently performed oral sex on me while having a cold sore. Will the daily Valtrex protect me from developing genital herpes? How will this affect me in the future?

1) I have recently discovered that I have what appear to be crabs in my pubic hair. They are itchy and annoying and appear to be laying eggs. How do I get rid of them?

2) I think I have pubic lice, a.k.a. "crabs." Do I need to see a doctor about this problem, or is there over-the-counter medication of some kind I can use to expel the little buggers from their new home? Also, I'm curious as to how I got them since I haven't had sex for several months and this is a recent development. Can one contract this problem from sharing clothing, towels, or bedclothes?

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.