Hey there - I totally know the feeling the memory is still nailed to my brain cells!! The mucositis does eventually go away - usually abbot 2 weeks. It just lessens - I too gagged and threw up because of it! It was brutal and I lost the bulk of my weight the two weeks after. The dryness is hard to - that's me every morning now! As for sleeping. The only time I really used pain meds was the post treatment weeks - even when I stopped I still took one oxy at bed time - it would nock me out cold! God luck and congrats at hitting the end!