weight gain and struggling to cope with it

ago. I was having trouble eating and getting exercise so I lost a lot of weight really fast. Over the last few months I've finally been getting treatment, and I've put all that weight back on. It never bothered me before I was sick, but now I can't take it and I hate my body! I've never struggled with body image issues before!! I've been exercising as much as I can but I have a really demanding schedule so I don't really have time recently. :( what to do?