Help! painful ulcers from oral thrush?

I am on diflucan one every 3 days for 9 days and the first two didnt help the oral thrush - probably because I was on Bactrim. SO they prescribed me mycelex lozenges yesterday to suck on 5 times a day for ten days. My mouth still hurts really bad- my tongue has ulcers all over it making it hard and painful to eat or talk. My question is is there any topical pain reliever I can use for this? and what things can I eat that will be easy to swallow besides yogurt? ANyone been through this? I will take any advice at all. So frustrating!