Mare,
The doctor is required to disclose to you all possible side effects. I too had similar radiation and chemo treatment. I got a PEG after a few weeks due to difficulty swallowing. However, other than fatigue I did not experience any of the side effects that you speak of. My skin got red, but never broke, and I don't even know what thrush and candida are. The main problems that I had related to mucositis.
Let's hope that you guys never get to the worst case scenarios.

Danny G.