hi everyone. i am 22 yr old and i have been having for the past week a slight cramp in my lower abdomen. my period isn't due for another week usually the first of the month.. i haven't really ever been regular. i had sex with my boy friend around the days i was ovulating which was around the 13th of October  it is now the 27 and i been having lower back pains that come and go. my breast are a little itchy at times and my stomach. i have had this lower abdominal pain for about a  week like a lite cramp like my period but my period isnt due for another week or so.. i ve taken 2 pregnancy test and they came back neg, but i think i still could be.. today is the 27 and on the 27 i started spotting very light only lasted a day and not the whole day and today again im spotting but its a little darker now more of a reddish color where as yesterday it was a light pink i took a pg test this morning when i woke up but it said neg... anyone else haveing this problem, or know anything about this answers would really help please!!