It depends on which procedures you opted for. Expect for fluid retention, which is expected to occur initially, your weight may not change so much at first. If you had a breast fat transfer the scale may not change in number, but the balance between the body fat may be more proportional. If you had implants inserted, they will also slightly add to your weight. If you underwent liposuction, a maximum of 5 liters of fat is allowed to be removed from the body for safety reasons.