AIO I Flashed my wife and the she said EWW

As the tittle says i flashed my wife and her first reaction was ewww. For context im a pretty big guy 6’1” 380lbs and we were in our bedroom getting ready to go to a dr appointment i was changing and she was in front of me, i flashed her and she quickly said ewww and i just put my clothes on and I got mad at her saying ive never treated her like that and by her saying that made me feel bad. Ive been losing weight and getting in shape (im down 65lbs) we have always had that relationship and really open with each other. But now idk im not comfortable changing In front of her