You sound like me a few weeks ago, only just now am i coming good. My son lived on yoghurt, toasted sandwiches and fruit for almost a week. Dont feel bad you are doing the best you can. I am still having bad days but i have cut down work now after a few fainting episodes and am starting to feel better.

Movie in the afternoon was my saviour as my DS doesnt sleep every day.

Hope it passes for you soon.