What’s wrong with me?

So a few years ago when my periods were absent/irregular I saw an OB, and she did a CBC and checked my thyroid levels and did an internal exam. Said everything was fine and that I was underweight and stressed out to much and to give it a few years.

Fast forward, I’m 23 and I’m still dealing with absent periods, mood swings, and now growing hair in strange places like my chin and my chest. Back when I went the first time, I told her I thought I had PCOS and she said between the internal exam and the lab results, nothing scientifically indicated I had it.

I think I may just have a hormonal imbalance from a few years of really crippling stress and anxiety. I’m going to go back to the doctor, but I’m terrified. I feel like something is seriously wrong with me or that I’m infertile or something. Anyone able to talk me off the ledge???