Another idea Ribbons. I think it is really important for you to break your cycle now, of stress and under-eating and calories. I don't know where you are, but I have been in Melbourne at this time of the year (mid-winter) and it is so depressing - cold and wet. Is it like that where you are? I was thinking maybe you could go for a trip somewhere dryer and hotter, maybe with whichever ever of your parents you feel closest to (you definitely shouldn't go alone and I bet your father would take two weeks off if you explained and asked him). Cairns is lovely at this time of the year. I really do think your exams are a dead loss in your present state and you should get signed off sick from them as soon as possible. There is nothing more important than your health.