your story sounds like my husband's. your treatment plan sounds the same except his was 35 treatments. just to give you some hope, no one would know he had a diagnosis of cancer a year ago. He coughs a lot but other than that, nothing physically present. It was awful, I'm not going to lie to you. He lost 60 lbs in 2 months because he refused to use a feeding tube and ended up hospitalized due to dehydration. He was so dehydrated, his mind was completely shot and he couldn't do the most simple task. I don't think is normal during treatment. The feeding tube was the worst part of treatment for him. it never fit well but that's probably due to extreme weight loss so quickly.
It wasn't a picnic but they told him that he has a 90% survival rate now. They changed his diagnosis from 4a to a 2 due to the
HPV 16.
Take care and keep checking in.