Jenn,
I have struggled with depression for my entire life, and I feel for you. It is a tough thing to deal with, and sometimes medication for awhile is the only thing that can help pull one out of the dark, sad depths. However, it sounds like you are feeling much better and I'm thrilled for you!
I imagine you've figured this out yourself, but there are tons of low-carb goodies available to you- try going to www.synergydiet.com for wonderful low-carb breads, bagels, muffins, candies, etc! I became a carb addict with my 1st pregnancy, and it continued till I finally found the Atkins way of eating about 2 months after my second pregnancy was over. The fabulous low-carb products that are available to us now have really helped me stick to this way of eating and I don't think that I will ever go back to eating sugar or refined flour again. It's simply not hard for me to say, "No, thanks" to cake, cookies, ice-cream any longer. Why? Because I feel better, my skin's better, my hair's better, I have lots of energy, and within a month or so I'll be the size I was before I had my first child (and I had resigned myself to never being that size again before I discovered Atkins). Plus, why eat a bunch of sugar-laden crud that will make me tired and fat when I can wait and have a delicious low-carb treat when I want it? As long as you keep careful track of your carb intake, adding low-carb goodies can really keep one on track when one feels s/he can't put another piece of chicken in her/his mouth!
Keep up the great attitude...15lbs is NOT very much weight to lose!