I Just Had Surgery For Diverticulitis On Dec 2, And

I just had surgery for diverticulitis on Dec 2, and have been on antibiotics for about a month, before and after. My surgeon says I may have an Anal/Rectal/not Vaginal yeast infection caused by so many antibiotics. I am suffering from itching, burning, etc., for about two+ weeks. I have been using OTC Desitin, Hydrocortisone Cream and Anti-itch Cream at various times and sometimes they work, for a little while.
I also have bowel movement problems. What to do. What to do.
Thank you.
Paulette