I understand your frustration. I am 5'4" and went from a size 2/4 to a 10 in the six months I have been completely sober. Very hard on my ego but - BUT - I think being sane(r) and an overall nicer person is better.
I hope to figure it all out and understand that my poor body is recalibrating after decades of abuse. Patience and total commitment to sobriety! I would rather my son remember his mother as a person who wrestled her demons and WON than a thin woman