Diagnosed with pcos at 16, now 25 periods are monthly. but the weight is still very much here, dispute healthy diet and exercise, any suggestions?

PCOS treatment: You should really see a gynecologist. Some patients do very well with metformin but other treatments are out there as well. It is important that you have your issues addressed as you may be in the period of your life where you will be thinking of children. Best to start working managing your pcos sooner than later. Good luck!