My vulva, both the labia minora and majora as well as the clitoris and clitoral hood, have become incredibly swollen and very red. Sometimes one side will swell more than the other, in some ways its like a moving rash. I have been using prescribed Hyderm Clotrimoderm 1:1 compound which, if it was an external yeast infection, should make the swelling go down in about three days but so far hasn't been proven to do anything. Without the cream to keep the area lubricated though it becomes unbearably dry, urination burns, and walking would be impossible. This irritation has happened about 4 times over the past 2 years at seemingly random. I've been to my doctor who gave me the compound. Recently went back with the same symptoms was swabbed for a yeast test which came back negative. So, its not a yeast infection external or internal and my doctors don't know what it is. The only thing that makes it go away is my period. This irritation is getting irritating, any ideas?