That sounds very frustrating!
I have gained back over fifty pounds at one point myself because of stress and terrible eating habits. I'm not sure what would help for you but personally the way I got over it and started going back to a healthy weight was to forget exercising and focus on eating clean and wholesome without really counting calories. I didn't sit like a lump but I went for walks instead of doing intense work outs and then worked my way back up. Lost twenty pounds doing it.
I hope you can overcome this obstacle, stay focused on your goal!
