I Have Been Having Acne Around Chin For Months. It

I have been having acne around chin for months. It doesn't matter if it's before, after, or between my periods. It's constantly on my chin. I looked up a lot of information about acne around chin and tried lots of treatment methods, and none of them ever worked. I drink lots of water, exercise, eat healthy, and still have acne on my chin. When I go to the docs, they just always tell me that it's a minor acne and I don't have to worry about it, but it has been on my chin for MONTHS. I haven't had a clear chin for a year or two. I know that acne around month is because of hormone balance, but I just don't understand how long this is supposed to last. Nothing has changed in my life past year or 2, and I don't feel any stress. Can you tell me what I can do to fight against this acne? Thank you.