vaginapagina | PCOS question

Backround: I've been suspicious that I have PCOS for a few years. I have almost every symtom (irregular period, eating healthily but still having trouble maintaining a healthy weight, acne, dark skin patches on my thighs, excess hair on my lip/stomach/toes). I also haven't gotten pregnant after about 8 months of not using protection. I brought this up to my doctor a few years ago, and was tested for thyroid/ insulin level promblems. Both tests came back negative, so my doctor dismissed my concern. I went back a few years later, and was told the same thing. I was never even given any possibility as to what is wrong with me. It's soo frustrating.

Questions: What other tests could be done to diagnose PCOS? My insurance is wacky and doesn't cover much, so is it possible to be checked at a PP? What else could these symptoms mean?