PCOS polysystic ovarian syndrome :(

I recently went to the gyno and found out I had cysts on my ovaries it’s explained finally why I have so much pain mainly on my right side . They started me on a birth control and metformin. Everyone tells that I will be fine. But I’m super late on my period I know this conmen but I’m stressed irritable scared of the chance of not being able to have kids and wanting them removed so there no longer there. Does anyone have advice of how they have may have dealt with the stress behind it. And maybe tips on how to start living a healthier lifestyle for PCOS please and thank you ! :(