Well, if you don't mind I will tell you of my experience with PCOS? When I was young, teenager young, it was common for me to go six months without a period, then six months with it. I was pretty happy, naturally about the six months without it, not so happy about the six months straight. That led me to a doctor. PCOS wasn't even a thing back then. As PleasantSims stated, they just put you on birth control, which is what they did with me. The doctor called it a hormone imbalance.
Go forward many years. I am in my thirties at this point. I have huge and sudden weight gain. I don't know wtf is going on. I was always anywhere from 95-110lbs. Suddenly? I am going through pants sizes every two weeks. Seriously, I was having to order new works pants every other week, same for home pants. I went from a size 3 to 16. It was getting me down so bad, I was going to the gym 3-4 times a week and it didn't stop. I was doing a good routine of aerobic followed by lifting. Didn't help. I was eating really heallhy, too. This is why I think that PleasantSims is off base as regards it being about diet and exercise. It's not. It's hormones combined with a pancreatic/thyroid disorder. Unfortunately, female disorders still are either not understood or even have doctors trained to look for them. She is right about carbs though. Those put me to sleep almost immediately as I feel my body shutting down needing that sleep.
In the end, I happened just by pure luck upon a doctor who diagnosed me with PCOS. I had the hirsutism too, meaning my chin grew hair. I had, obviously never had any luck in conceiving as well. I had the rosacea, as well, meaning rosy cheeks. I was also often very tired unexpectedly.
Anyhow, she diagnoses me, puts me on something for the rosacea, and so on and referred me to another doctor. They did ultrasound, which did find cysts on ovaries. After many blood tests, they determined that I now had hypo-thyroidism, too, which was really odd to me as I've always been hyperactive my whole life. That is another symptom. I did lose the weight but that was due to another medical condition, but unchecked PCOS is very dangerous, imo. largely due to the insulin resistance factor. It's not that uncommon for diabetes to be the diagnosis for some because it mimics it so much.
So, for you...what I recommend? Find a FEMALE doctor, one well aware of PCOS, who can run the battery of tests of all sorts that would address anything that may indicate PCOS? Go from there.