Is Thyronorm Effective For Regularizing Periods?

I am 32yrs female.For the past one year i have irregular periods but for the past month i am getting periods only by taking regestrone tablet.MY DOCTOR ADVICE ME TO TAKE THYROID TEST AND PELVIC SCAN. SCAN REPORT SAYS THERE IS A SMALL CYST IN MY OVARY AND MY tsh LEVEL IS 6.44 Uiu/ML.SHE SAID ITS VERY LOW THATS Y I AM NOT GETTING PERIODS,SO SHE PUT ME ON THYRONORM 25MG FOR ONE MONTH.WILL I GET RELAR PERIOD WITH THIS TABLET?PLS SUGGEST ME