Hi venkat - the reason they treated you with the rads and chemo was that this cancer can be aggressive. It's happened before that they have sent people home post op said you're cured only to have it recur again months later - also when it happens it can some times run rampant or be caught at a later stage - so then this requires more surgery - which is harder to heal etc...

Sorry you're having so much trouble with thrush - it does sound like your immune system is weakened - not a surprise with the chemo - try to take in enough protein and iron to help boost it - I know it's hard when you are having trouble eating. Also yogurts - etc... Check with your dietician they maybe able to help. Sometimes our bodies get so out of whack that it's hard to get it all sorted out.

Take care