You are not a loser, sweetie, even if it feels like it at the moment.
I put on tons of weight when depressed and on citalopram. The single best piece of advice was from my mother, who told me to allow myself a lot of time to lose the weight. It was really important, actually. I didn't put to much pressure on myself or get discouraged, just kept plodding along and one very fine day two years later, it was all gone and my ass was looking FINE.
WeightWatchers was excellent and helped a lot. I didn't like meetings but did follow the plan online and with recipe books, so think about trying that. I found WW invaluable for helping me rediscover what a suitable portion was, something I had lost sight of while comfort eating.
Otherwise, my single best tactic was getting a personal trainer, who helped me enormously and whom I have stayed with through pregnancy and beyond. Money for that would be a good idea for birthday and Xmas presents. Even a few sessions can help a lot as they can advise you what kind of exercise to do and give you a good idea of how hard you need to be working. A good trainer should help you work around any injuries or difficulties you have.
Apart from that, do keep certain good fats and meat in your diet: v important in depression, as excluding too much fat will exacerbate low mood. So: boiled egg for breakfast, avocados occasionally and unsalted nuts for snack are all good ideas. I did switch to much leaner meat and leave out butter though.
I did eat things like cheese and chocolate, just drastically reduced the quantities.
Oh, and homemade soup is your diet friend.
Good luck, and keep posting.