Hi Doctor, I always have regular period cycle. 3 months ago I was diagnosed with thyroid issue and been on medication since then. Initially it was hyper and then 2nd months it's hypo and 3rd month test is normal but my doctor advised to continue using Thyronorm to complete 4 month course. Even though I had this thyroid issue from last 3 months my period was never irregular. But this month I haven't yet got it. Last mensus date is Sep 7 . My mensus pattern is usually 25-30 day cycle. It's 30 days already but didn't get my period yet this month. I usually have stomach pain every month during my period. I am getting the pain now also but don't see my period coming. Please suggest me.