I am sushma 27 years old .my periods we're due on 15 th. I used an ipill once last month. This month on 8 th I noticed like period but with very little bleeding only one day. I took pregnancy test but negative. I am not understanding whether my period is over or it is still pending. Can anyone pls help me out. I also have thyroid I use 50 mg thyronorm tablet daily. I would like to know the reason of delay.