Hi, Jen. I think you were absolutely right about your metabolism being changed. For at least a year, nearly two after treatment, I ate and ate and ate like a linebacker. As time went by, I found I had loads of energy but was just very, very thin. At about the two year mark, my metabolism seemed to return to normal and I had to cut way back on my intake. I know this has been the case with others, so you probably do not need to worry -- if you can just maintain, you will eventually gain. No charge for the rhyme (grin). To be honest, I thought that being able to eat absolutely anything I wanted in the quantity I desired was a bonus for completeing tx! Enjoy yourself and find something else to worry about. This situation will right itself in time.