How long to get rid of bloating.laxative use and diuretics?

I have had anorexia and bulimia since October and I binge ate the past two days. How long will it take my stomach to flatten back out. I am drinking a lot of liquids and I took laxatives to help my body rid itself of excess but how long before my stomach will empty and flatten. I know this is a bad thing and I am currently in treatment for the eating disorders but I cannot deal with being bloated it makes me feel extremely uncomfortable. any tips on flattening it back out quickly? I also use diuretics but I take those after my stomach is empty. Please help me out here....and how long will it take for laxatives to work on a full stomach.