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.

I have been on the Nuvaring for three months now, and I am keeping it in for the four weeks then changing it because my doctor said there's no need for me to have a period. About two weeks ago I started having dark brown discharge and it has gotten more heavy, but only when I run or stand up real quick. Is this normal or should I call my doctor and find out what is going on?

I live in Prague, Czech Republic — Europe. Before asking any question, I should tell you that I really appreciate your service. As for my question, I would like to ask you about the most common reasons for condom failure as a contraceptive method. I suppose that the most frequent one is condom breakage. But what are the others? I am especially concerned about pregnancy risk implied by the accidental transfer of sperm in pre-cum to condom by fingers while putting it on.

PLEASE, PLEASE, PLEASE answer this question for me. Are condoms you buy from machines in the bathroom safe? What I mean is, could they carry some sort of disease or STD or anything that can make me sick (I don't mean allergies)? And also, could you tell me if American condoms are better than other countries' condoms? I read that U.S. condoms are electronically tested for defects or diseases, but I was wondering if other countries like Europe or Thailand or whatever tested their condoms, too. If I was older, I would buy condoms from boxes, but until then, I am stuck buying them from bathroom machines.

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?