What Causes Foul Smelling Pelvic Yeast Infection?

i have had symptoms of all pompe disease from reading,was diagnosed with chronic a.v.n. 2 yrs. ago,went to gyn,gave me syeriod c tream,bad reaction,now pelvic yeast infection bigger,foul smelling,spreading,cant breathe right,think right,shaky,extra pain i went to gyn,they gave me a steriod for a pelvic yeast infection. had allergic reaction to the med they gave me,now infection i had without knowing what it was is awful smelling,looks like it spread n my head and breathing feels way off eyesight to.