My last period date is 4 April but it missed from 20 days and just Before 8 days I feel just like omating and after 3 days start bleeding but bleeding is only 1 and half day and this just like our periods 4 the day after it's stop but after two day it's only one two drop flow so check the urine test it's negative so I confused what's that it's period or not because my period is regular and flow also normal every time so please help me what's that help me and I have back pain and now normal white discharge and now also I have backpain whats the reason am I pregnant or not plz help me