Thank you for posting your question here I will try to answer it to the best of my abilities.
I recommend you see a obs and gynae specialist, she can prescribe you with proper hormone replacement
medication that should help get your period back to normal, they can also run an ultrasound
to check if there is anything wrong with your ovaries. This would just be standard procedure to check if everything is okay with you, nothing to worry about.
I hope this answered your question.