Barb I'm so glad that it isn't more serious - I've been thinking about you all week and checked the old thread a few times to see if you'd swung by with news.
On the diet - you can do this!! It absolutely sucks but you'll feel so good after you've adjusted. I found out that I'm allergic to gluten and lactose last year and I was totally stumped. I live for bread and cheese. I got pissy. Then I got sad. Then I started getting creative and now I feel so much better.
The irony is that for all those years I stuffed my body with God knows what and it more or less put up with it - coming up on six years sober it turned up its nose ... at toasted cheese sandwiches and ice cream. Eventually, there will be nothing else to quit and I'll be eating air casserole :-)
Seriously though, you can do this and I'm hoping that the drugs start making you feel better instead of worse soon.
Hugs,
SL xoxoxox