MY AGE 30 I HAVE 1 CHILD FOR 7 YEARS . MY WEIGHT 75 KG HEIGHT 156CM .AROUND 10 YEARS I HAVE A PROBLEM FOR PERIODS. IT MAY BE HEAVY FOR ONE MONTH IN 15 DAYS. OR 6 MONTHS NO PERIODS. PAST 5 MONTHS I HAVE NOT YET PERIODS. WHAT CAN BE DO? SHALL WE SUGGESTS THYROIDAL TEST