adult acne? PCOS?

Why am I getting more and more acne as I get older? I never had any as a teenager. I'm 27 now and it's been steadily increasing since I was 24 or 25. All around my chin/mouth. I've read that it can be a symptom of PCOS, but I don't think it's due to that, because I have a very regular cycle. I do have more than average hair growth for a woman on my face and body, which I've seen can be another sign of PCOS, but I've always been extra hairy ever since I was a kid, so I'm pretty sure that's just something genetic from my Italian family and unrelated to my reproductive hormones. Like I said my cycle is extremely regular, so just wondering if anyone has any ideas why I might be getting all these blackheads and pimples...???