waight gain reasons?

SoI have recently gained a lot of weight since the MS 1st started taking it's toll. I have read in one post online somewhere about people gaining weight from taking Copaxone. There is also the lack of walking around much but this is what I do not understand...I eat less than I used to, eat better, and workout. And it could be because of age. I am healthier than I ever was. I quit smoking, eat better and workout as best as I can. It really upsets me because I look in a mirror and I get grossed out by myself. How can Shawn or anyone find me attractive? argh it is so frustrating. what I can continue to do is eat right and workout as I have been.