Hi Shari, welcome aboard... congrats on being done with your rad treatments. You'll notice dramatic improvements over the next few weeks. Hang in there... It does get better!
I also survived radiation without a PEG, though it was very tough near the end. My wife made me these GREAT smoothies during the toughest times. She'd put in weight-gain formula, peaches, yogurt (sometimes), soy milk (yum!), maybe even some Ensure. I can't remember what else. But it felt OK going down and was packed with calories and nuitrition. I tried to avoid anything with citric acid or carbonation as that would burn!
I remember reading about someone on here who had tempura shrimp two weeks after her last treatment. So I set that as my goal -- to eat something like that two weeks after I was done. I got close, going out to Red Lobster about four weeks after my final treatment and getting down some Shrimp Scampi, deviled crab, flounder, etc. Yes, it tasted weird, but it tasted somewhat normal so I was pleased...
Again, welcome to the forum. Ask away if you have any other questions...