Ive Noticed Within This Past Month That My Cheecks Have

Ive noticed within this past month that my cheecks have sinken in.im 53 yr old i do have body dysmorphia and every other week i am crash dieting so i am always up and down by five pounds.in past three yrs i have been beaten down with stress mamy issues includong divorce adult chidren problems , work related stressors as i am a nurse in a nursing home.ive just moved and starting over got another job alot let stressful.i am very depressed about the way i look and i looking for answers amd adbice as to how to fix my appearane