Fasting Diet, Input needed

Okay so here's what I eat almost everyday:
two glasses of warm water with lemon
1 banana
1 orange/apple
and perhaps a glass of milk/2 roti's (for those of you who don't know its like two slices of brown bread) and indian vegetable curry.
and every three days I have an egg for the protein.

I also exercise in the evning which burns another 400 cals.

So please tell me if what i'm doing is very bad for me and whether it'll start screwing with me metabolism and start burning protein instead of fat.

At the beginning of this diet I weighed 123 (56) lbs at 5 feet three inches and after two weeks I weigh 117 lbs (53). I plan to carry on with this till I become 106 lbs (48 kgs)
please discuss this with me..