2 years without AF

I have PCOS along with Insulin Resistance and Hypothyroidism. AF hasn't shown up in nearly two years (December 2015). I have been losing weight - working out and eating right, I got put on a high estrogen birth control, I take Metformin, I even took Vitex for months. And nothing has brought AF back, not even a little spotting. I'm not TTC right this second, but I'm scared that AF will never come back and I'll never have kids. I'm also worried about what issues having no cycle is causing.

Has anyone done anything or taken anything that brought back their period? I'm so so desperate. My doctors aren't worried about it at all and it's driving me crazy.