Hello doctor, I have had my last periods on 20 july and now in this month , i am waiting for my periods to come. I have done home pregnancy test, with first urine, 5 times and it came out negative ll the time. I am taking Sysron N, 2 tablet, for 5 days. How long will it take to come my period back. Also I am breastfeeding my 2 yr old baby. And i also want to know stress and worry also effects regular mensuratal cycle. Also, my periods were irregular sometimes earlier also. Regards Shilpa