How do I stop binge eating?

Recently, due to my depression and OCD, I've started to binge eat. It's don't know if it's because I can't control how much I eat or I'm just apathetic and WANT to eat. i think it's a mix, leaning more towards the latter. The thing is, for the past FOUR years, I've been forcing myself to eat like 1500 calories a day (or less), only having more than that occasionally. Over the past few months I've gone from 125 pounds to 137 pounds at 5 foot 9. I want to get back down to 125, but I can't stop eating. I don't know what to do. Also, when I feel like I've eaten too much, I can't function. I can barely get out of bed.