2 months 3 weeks & 6 days abstinent & I'm in trouble

I've made it farther into abstinence than I ever have. Tomorrow I earn my 3 month chip. At least I should...... I'm not sure I'll make it. I've been obsessing about food most of the last 2 weeks. My definition of abstinence is to avoid a pattern of compulsive eating. Today during lunch was the first time I didn't follow my food plan. I didn't go crazy, I ate 1 P & B sandwich, 2 gum balls, & 4 3/8 oz goldfish more than I should have. Usually a small amount during 1 meal over what I should have ate is the breaking point. Once I do that I'm usually completely unable to eat in moderation. By unable to eat in moderation I mean binge eating so severe that I'll completely wreck my families finances from the amount of food I'll buy & eat in a week or less. Ten thousand calories a day would be a moderate day of binging. Sometimes these binges last weeks, but sometimes they last much longer. My binges have lasted a year and a half before. I'm afraid. If I can pull myself together by dinner I may have a chance, but I've never made it past 2 meals of eating unplanned food before. God help me.