No cyst but polycystic ovaries?

So, I went in for my yearly pap. They did a transvaginal ultra sound and said there are no cysts on my ovaries, but my ovaries are polycystic? My doctor did not go in depth enough for me to understand. She then stated my endometrial lining is a little thick but not concerning at all. I seen the nurse practitioner, but she just wasn’t very helpful on telling me anything. I told her my periods can last for 9-15 days and she just wanted me to try birth control, but I’m also wanting a baby. Can anyone explain this to me? Maybe guide me with some questions I can ask my doctor? What should I be doing? Thank you in advance!