What Causes Rashes In The Groin Leading To Bladder Infection In The Partner?

i have problems with rashes in the groin area when i have sex with my wife she gets bladder infections. I believe it to be yeast i have a topical cream the dr gave me but they dont do anything they suck here in this town i went there one time with a back acke they tested me for drugs said i did not have any thing broken come back and well see how things go. i have evtra wieght and I am working on gettign rid of it I was in a accident and gained a lot during the recovery. the skin fold over my belly and the moisture creats a rash and an oder. i can wash with anti bac soap and it will be right back before the end of the day. what can I do is there medication that I can take or a vitamin. need help dont know what to do