Withh PCOS it is really important to have a period as regularly as possible, naturally - menstrual suppression is different.
Contraception particularly progesterone is used to thin/stop the growth of the uterine lining because PCOS/irregular periods cause the build up of the uterine lining often leading to endometrial hyperplasia, a precursor to cancer. (PCOS patients have 2-5x more risk of endometrial cancer).
But having progesterone controls that even if you don't have a period on contraception, it is no longer leading to overgrowth of the uterine lining, this time its caused by having
progesterone thin/stop the growth.
I would definitely see your GP, it might be worth getting a transvaginal ultrasound to check for anything. I'd also get some bloods done as well to see how your PCOS in general is. It may be worth getting and using something like naproxen more regularly during your periods as well.
Blood test wise I'd probably ask for:
• Total testosterone
• Sex Hormone Binding Globulin
• Free Androgen index
• Fasting glucose + insulin• Lipid panel (cholesterol, triglycerides)
• Vitamin D
• Thyroid panel (TSH, free T4) since
Then once your results for bloods come back - depending on what they show, ask your GP about trying metformin and/or orlistat as well. That can help regulate BP and other symptoms to prevent complications.