Well first off, i just want to say you should not be treated like that.... Second i dont think the atkins diet is the best diet for many health reasons. Its not healthy to cut out an entire food group. You need carbs to give you energy. Now, you might think about going to a health nutritionist to find out a better diet for you to go on, and also to think of a good exersize routine. If you cant afford to go to a nutritionist, maybe you can try the south beach diet, which is a lot better for you. I would also say you should start goign on walks everyday just so you can get your heart rate up and burn fat and calories. Its important to stay healthy, and you should also stop eating fast food.
I would seriously recommend going to a health food specialist, because they know your physical limits. I am no nutritionist.
I think if you start changing your life style you will start to feel better about yourself.
I would also maybe say you could have a "spa" weekend and just pamper yourself. Everyone deserves "me" time....
Good Luck
p.s. dont let anyone treat you like that.