How can heavy and irregular menstrual periods be treated?

Hello doctor,

I am a 17-year-old female and my periods have been irregular and heavy from the beginning. It has been almost four to five years since I got my first period. But they are still irregular. For the past two years, I have used some medicines, but they have worsened my situation. After using those medicines, my period came after five months and they were long. So, I consulted an ayurvedic doctor and the ayurvedic medicines worked back then. But now, nothing is working. I cannot go to college since I feel I need complete rest.

Currently, I got my periods two weeks back. My period will not stop till I use an effective and a strong medicine. My period comes once in every two to three months and lasts for more than two weeks. At the end, it gets heavy too. So every time it comes, I will have to take medications to stop it. But now, I am fed up with all these medicines. I have also tried a homeopathic medicine called Sabina, but they are also not effective. In the past, yes, I have used Regestrone and as it did not work, the doctor prescribed Femina tablets. Please tell me what is happening with me and suggest a nice and effective method. Please help.

Thank you.