Deprovera

I started using depo just after my daughter was born in 2001 and I gained so much weight but with alot of exercise I managed to move from size 18 to size 14. Then I started struggling again with my weight trying to come down from a size 14 but I don`t know what happened in the last 2weeks I just dropped a dress size and lost weight and this is not being on any diet. I have been pigging out over the weekend and still managed to loose 2lbs over the weekend.

Does anyone know why this happened and if it happened to them. I was going to come off it because of the pains I have in my legs but now I will just stay on it.