Is it necessary to take Multivitamins for irregular periods?

Hi Doctor,

I have been having irregular periods since I started getting periods at the age of 13. A bit of history about me is that in my childhood, I used to be sick with a cold and cough a lot of times, and my weight was always less. After I started getting periods, they were irregular. So, I consulted a gynecologist, and she gave me some multivitamins, and they became normal. When I stopped taking them, they became irregular again. At the age of 18, I consulted another gynecologist, and he said I had a cyst in one of my ovaries, so he gave me a medicine to dissolve the cyst.

My stomach was very painful at that time. Then, after that, again the periods became normal, and again, after some time, they became irregular. So, when I consulted another gynecologist, she gave me contraception pills. They were normal until I was taking them. Now, I have stopped taking any medication for the past two years, and suddenly, in the past six months, my weight has gradually increased.

My height is 5 feet 2 inches, and my weight is 130.07 pounds. I recently had a scan done, and the doctor said they found a very minor cyst in both ovaries. He has suggested losing some weight. But even when I was underweight, I had the same issue. What shall I do? Should I keep taking the multivitamins until my menopause age and stop after that?

Kindly suggest.