I had a routine screening colonoscopy one week ago. Prep wasn't that bad as I had started eating very light a few days before my fasting day. Everything went fine and I was back to normal right away. Today is exactly one week after the prep and this morning I noticed a tingly, fuzzy feeling on my tongue. It is whitish and I can feel patches on the roof of my mouth and sides and inside my lip. Could this be thrush or some type of yeast or fungal infection? And could it be related to the colonoscopy and the fact that my colon was stripped of all the beneficial bacteria? And what can I do now to correct the situation?