I did my first fast day yesterday and vomited. I'm the kind of person that feels terrible when they don't eat but I thought I might as well give it a try. I thought maybe if I skip breakfast then the hunger wouldn't kick in so much. I had a bowl of soup for lunch and some blueberries and then another bowl of soup at tea time. I was feeling a bit unwell by the tea time but I thought it because I hadn't eaten so I forced down my second bowl of soup. Then I started feeling increasingly poorly and then about an hour after eating it all came back up again! Could this have been caused by the fasting or do you think it's a coincidence? I feel much better this morning, although I haven't tried to eat yet. 
) you could maybe start with say 7-800 cals, split up to have wee things throughout the day. See how that goes, then reduce the calories to 6-700 still split up and keep going downwards until you get to the 500 . Generally, ease yourself into it gently, in a controlled manner. Do let us know how you get on
