Going backwards... this is like a nightmare

Hi all, finished radiotherapy 14 weeks ago for base of tongue scc. 

My mouth has become really dry again, and my throat has now decided that i can no longer swallow anything solid yet again. I have also developed lymphodema (turkey neck and swellings to side and back of neck and bottom of cheeks).

I am so dry now that I have to carry water everywhere. My taste is still not back, but I now 'taste' most things as rotten food, and gag when I taste them.  The only things I can now 'eat' is coffee flavoured Ensure, weetabix (mashed to a pulp), and pureed red meat and onions.  Almost anything else is horrendous. I have also gone almost completely deaf!  

This so called recovery seems to be worse than the treatment, and gets worse not better as time goes on.

1. At least my 3 month scan showed I was clear of cancer, although there is a scar from one lymph which apparently needs regular ongoing MRI scans to monitor.

How does anyone get through this?  I am really fed up.