Dear Dr. My monthly period is delayed by almost 20 days and not yet come. Till last month it was regular but this month it is missed and 20 days passed. I am using copper-T from past 2 years and having thyroid which is normal only. I have done pregnancy test 2 times, last week and this week morning times but both the times negative result only. I am facing this issue first time in my life as my periods never delayed by 20 days. Kindly suggest the Best. Thank you.