Not quite the same but I've got to go for and endoscopy and and can't eat beforehand so checked with the surgery and the nurse said not to worry about meds. You probaby wont feel like eating for a couple of days but if you can, Marigold vegetable stock made up with boiling water in a mug isn't too harsh on the stomach if you can manage to keep it down. If you are on Metformin you shouldn't get very low BG's. Funny what memories come back.... when I was little my mum always used to give me a bit of mashed potato and a bit of fish steamed in milk when I wasn't well. I hope you feel better soon, it's a horrid bug and so easy to pick up. When better use an anti bacterial hand get when out and about for a bit of extra protection and at home lots of thorough hand washing.