What Causes Irregular Periods Along With Hair Growth On Abdomen And Chin?

Hello, I am having irregular periods, sometimes very heavy, lasting a week or so, then having another full heavy cycle again just 4-7 days later. This has been going on for 6 months. Also, having a increase of dark hair growth on my belly, chin, upper lip, and toes... other symptoms are fatigue ( somedays I feel fine, other days its hard to even get out of bed), and increase in headaches, sometimes severe, but mostly mild headaches.