Like Gary I still have pain yawning, not as strong, but still there. Under my tongue is still very, very tender as are the sides of my tongue way in the back. My tongue is still sore is I move it back and forth. Much improved from a few months ago, but still has a long way to go to be healed.
I did have a yellowish tint to my tongue for awhile, and it was white for awhile also. I still have a white coating in my mouth when I wake up or if I don't drink something for a half hour or so. I still have lots of whitish lines in my mouth, on my cheeks, sides of tongue and on top of tongue. In fact, my mouth is a mess right now! I am eating lots of food and my teeth and the new food irritate that heck out of my mouth and tongue.
Gary and Mark are the experts on thrush, there is also some good stuff on this site about it.
Hang in there!

SCC Left Mandible. Jaw replaced with bone from leg. Neck disection, 37 radiation treatments. Recurrence 8-28-07, stage 2, tongue. One third of tongue removed 10-4-07. 5-23-08 chemo started for tumor behind swallowing passage, Our good friend and much loved OCF member Minnie has been lost to the disease (RIP 10-29-08). We will all miss her greatly.