Diet affecting fertility?

Taylor • 01/15/12 💍 && ttc👶🏻#1
My gyno says I'm not getting pregnant because of my nutrition. I don't get my periods regularly and they said that's based on my nutrition intake. No periods mean no ovulation. I asked for clomid but they said not until I loose weight. I only eat twice a day and most of the time it's not the healthiest food. My bmi is 25 % and I don't excerise because I'm exhausted from work. I'm an stna with a full hall and I'm constantly running. I get 20,000 steps a day from work alone. My mother is overweight and had the same issues but got pregnant really easily. I've gotten pregnant before but miscarried at 8 weeks. Has anyone been through a similar situation? Any positive outcomes? Advice?