Gained seven pounds during a binge today!?

I haven't binged in forever, but something came over me today and before I knew it I was ingesting anything and everything. I was diagnosed with ED-NOS and would normally purge, but restrained myself. When I weighed myself just now it says I am seven pounds heavier than this morning! I feel like all of the self control I have worked for is gone, and right now I really, really, hate myself. Do you reckon this weight is permanent?