Julie,
I was like you. I had ulcers that didnt heal for 3 weeks and i was so sure it was a new cancer that has developed. Well now i'm into my 6th week and that persistent ulcer is still there but starting to get better. The fear of cancer reoccurrence is with me everyday still so you are not alone. Take one day at a time and hopefully that strategy will get you through the next few weeks before you start to see improvements. Finishing TX is such a momentous occasion, we expect to feel better right away and when we dont we start to stress that its cancer reoccurence. As you can see fron everyone's posts, it takes months and even years before we start to feel good.
Minh