I'm sure you know this by now, but try to avoid anything (beverages especially) with a lot of sugar in it. Your stomach won't react well. Also, avoid things that stain. Many years ago, I was taking care of a girlfriend with this affliction and I gave her some cherry Kool-Aid, breaking both rules. I don't think she ever got the stain out of her carpet.
"Be well, do good work, and keep in touch." -- Garrison Keillor