It's only been a month. Cut your losses and move on. Expecting sex on a regular basis after only a month with a girl that's had a yeast infection and on a couple anti-depressants is a little harsh.
Yeast infections are a not very pleasant thing go through - especially REALLY bad ones...my wife has been there done that...bought the T-shirt. So I can understand why she has zero sex drive.
But I'm a non sexually demanding married man so don't mind me
Are you looking for a relationship, or are you just looking for easy sex?