Good morning Fran,
Thrush is a Candida Albacan's infection...an oportunistic bugger that will find it's way in the vaginal area and then in the mouth with a dry mucus membrane. Is it possible your other meds set you up for this outbreak?
We, generally are colon challenged with IBS to have imbalance of good and bad bacteria in the colon. Taking the Lactobacillus in pill or yogurt form is so helpful.
Once balanced with the diflucan, it may be a thought for you.
I wish you luck, it always amazes me how people can respond so differently to meds. Also it seems as a rule WE are so sensitive to things... Good luck, I hope you feel better soon.
NancyB