Good morning and Merry Christmas! 
I've had an unpleasant little virus since about the 20th which gave me a churning stomach and a bit of light congestion/sneezing and dizziness, some headache - but the worst part was shitting orange water. I thought I had it under control by basically not eating anything initially (I felt too nauseous) and then just nibbling dry crackers and black tea, and yesterday some kefir drink. I mean, I do need SOME calories to keep me going over Christmas. I kept myself to myself the first few days and missed the 9 Lessons and Carols and the Crib Service that I'd thought I'd go to, as they're packed out. I sent DH to do the big food shop (in which I hadn't the least interest as thinking about food was making me feel sick). I've avoided non-household people. I'm washing my hands and nails a lot and spraying dettol spray on the loo flush and taps, in a forlorn hope that my family won't get it.
I thought 5 days in I'd be a bit better. Yesterday I celebrated feeling quite a lot better by eating my first proper meal (ham, vegetables, cranberry sauce, mash, etc) and had a minute glass of port. Big mistake. This morning I've been running to the loo a lot and the orange water is back. 
massive amounts of unhappy liquid gurgling from within.
What on earth can I eat?? My grandmother used to swear by a grated apple to stop the runs (I think she thought it was the pectin) and plain boiled rice. We're having rare roast beef and lovely veg today and I just don't think I'm going to be able to manage. Which is making me sad.
We have apples and rice and dry crackers. We have live yoghurt (but is dairy a good idea?) and a bit of kefir left. Do I really have to starve this thing out or is there anything sensible I can feed it that it won't process into something unspeakably unfestive?