hi, i'm very confused and dont know if im pregnant or not. my first day of my last period was on june 1. i and my boyfriend had our last sex on the 17 of june.on the 22nd of june i had a brown discharge and slight bleeding for 2 days or 3days and i remember my lower abdomen was hurting and i got back pain and i feel so tired that day (22nd june). my next period is due on the 29th of june but until now i havent got my period which makes it 15 days late. i took 2 pregnancy test first one on the 4th of july and 2nd one last night (13th of july) both are negative. i dont feel anything in my breast.i dont get morning sickness.its just sometimes my lower back is hurting.please help me...me and my boyfriend are hoping for a baby.