What Causes My Lack Of Menstruation Despite Taking Medication For PCOS?

HELLOO DOCTOR i am 30 years old married MY PERIODS DATE IS 28 OF MONTH AS I HAVE A PCOS I TAKE GYNAECOSIDE 2 TAB STAT ON 29 TO INDUCE PERIOD...BUT AFTER WAITING FOR 6 DAYS NO PERIOD INDUCE THEN I TAKE 2 MISOPROSTOL TAB THE AFTER ONE DAY I GOT A SPOT BUT NO SIGN AND SYMPTOMS OF MENSES THEN I TAKE 4 TABLET MISOPROSTOL STAT ORALLY 2 TABLETS VAGINALLY....HEAVY CRAMPS BUT NOW NO CRAMPS AND NO MENSES....MY HCG TEST IS NEGATIVE ON ALL THESE DAYS TILL NOW please answer my problem i m worried