If you are using latex condoms it could be an allergic reaction to the latex.
Perhaps I've missed some post so I'm not sure if you've mentioned this: was your sex partner also treated for yeast?
If not, it's a losing game. You and your sex partner(s) need to be treated together, and abstain from penetrative or oral sex for the period of treatment. Yeast infections can live in our rectums, vaginas, under foreskin, and be passed around from there easily during sex, including from sex toys, our hands...
A yeast infection can be a STD (sexually transmitted disease).
This site has particularly good information on safe sex, sexual practices--all you need to know. You know?
http://community.livejournal.com/vaginapagina/
No he was not, but it's funny you mentioned that because he's going to the doctor soon to get tested for bacteria or yeast. He's basically going to tell his doctor what is going on with me and is going to see if the doctor will test him. My yeast infection was in December and I've seen my gynecologist several times since then with this "infection" and it has not been diagnosed as being yeast, so I doubt that's what it is, but he's getting checked out so if he doesn't have anything wrong with him we can at least rule that out.
I'm going to quote something by Dr. HHH on the STD forum that you might be able to use: (my apolgies to the doc for lifting it!
"The rest of this message is one I have posted in response to other questioners with chronic, unexplained genital symptoms. It may apply to you.
It is a fact of life that human beings get various aches and pains. Out of the blue there is knee pain, a headache, abdominal discomfort, a stich in the side, tingling down a leg. Sometimes such problems are continuing or recurrent, yet no specific cause ever is found and clearly no important infection or disease is present.
Why should the genital area be any different? Not every symptom means disease. People with such symptoms of course should see a health care provider. But when a comprehensive evaluation comes up with no good explanation for genital symptoms, and if they persist after treatment of the potential infectious causes, it is wrong to assume a serious health problem. Just as some people have to learn to live with unexplained but benign headaches or abdominal pain, others have to live with unexplained genital symptoms.
Our genitals have a special place in our psyches, and unexplained discomfort can be harder to ignore than a painful joint or even a headache. But the principle holds. It's fine to look for harmless things that might help control symptoms. But potentially harmful treatments (e.g., repeated high doses of antibiotics, potent pain controllers) make no sense, and doctor-shopping (or internet shopping) for different answers generally is fruitless."