PCOS at 16

I am having extremely irregular periods so I have gone to my doctor to do tests to find out why. In the end I found out I have PCOS I’m still not sure how to take the news or just in general what to do but I’m just really lost rn. my periods are coming and going when ever and when they did come they were supper painful and extremely heavy to the point that full out chunks of blood would come out. Does anyone have anything that I should keep in mind or something that may change my mind about all this.