I need to increase my calorie intake now

i was quite ill in work on monday, had 3 hypogleacemic episodes so ended up stuffing my face with digestive biscuits to bring my sugar levels back up. Ive always had these episodes since i was about 16, they improved when i started dieting but now they have started again and are much more frequent. Went to the doc's yesterday with a urine sample and ive got ketones in my urine again which indicate that my body is burning fat as its not getting enough energy from food. The doc said im also dehydrated but i cant see how as im drinking at least 2 litres of water a day plus other drinks, though it may be because im weeing like a trooper. Ive got to go back next week with more urine and possibly blood tests. Ive posted this as a warning to some people really as some of you don't seem to eat much at all

so be careful