Welcome Leena, it is natural to feel awful after treatment. I only had radiation and chemo to shrink the tumors in my left tonsil and neck lymph nodes. I managed eating without a feeding tube and lost about 16 lbs. There were many days when eating and even drinking water was severely painful but I insisted on eating by mouth. Many people here prefer a PEG tube which seems to be a life saver to them.I am Chinese and my major diet at that time was congee. I gained back all my lost weight after 6 months post treatment.Be patient and you will see the light at the end of the tunnel soon.

Karen.