I am so sorry to hear about your surgery.
My friend told me about the same thing last night, It's candida or fungus. Change your diet - no sugar, no flour products, no yeast, NO sugar, eat veggies and protein, drinks lots clean water. Research candida. SWEAT, take anti fungals. Good teas to drink pau d'arco, red clover, burdock root. Also look at herbs by Humaworm. They have an anti-candida formula.