Precursor - I have always struggled with eating disorders. Anorexia, bulimia, a weird spitting one that psychiatrists still struggle to classify 20 years later, that's me. The thing that has absolutely saved me is exercise. Running (or jogging) a slow 5k 4-5 times a week, weight training 3 times a week, Pilates twice a week. At 44 I'm trimmer and fitter than I've ever been. I am still struggling with eating disorders though. And that's with 2 kids. Both ND (like me). I'm terrified of passing my disorder to them. They are bright, intelligent kids.
My AIBU -
AIBU - YES Peri DOES mean weight gain, unless you are a disordered nutter like yourself
NAIBU - You can actually not get fat when you hit perimenopause, without being all disordered and crazy, you weirdo
IBU - Yeah we all get fat in the end, deal with it