Suggest Medication For Severe Groin Rash

Hi ~ I'm a 36 year old female who is 21 yr paraplegic, just got an ileostomy and colostomy last year, have taken tons of antibiotics but never had yeast infections until after the surgeries. Had a severe groin rash that ended up with 2 wounds that arent seeming to heal, although they dont look infected. Im taking femdophilous to help keep the healthy bacteria because I think since they cut into my intestines my flora balance isnt right and I am not able to completely get rid of the rash and the wounds not healing scares me. Had a blood glucose of 80 last year so I dont think its diabetes. My legs are always closed so not a lot of air gets to the area and I use baby powder to try and keep moisture away. Please help me! What should I do to help the wound(s) in my groin to heal?? Would tegaderm (sp?) work... currently using gauze and neosporin... dont think its working. Thank you so much!