Hello, my period was supposed to come today but since last week i've been feeling all of the pregnancy symptoms such as sore nipples, lower back pain, feeling dizzy, sometimes nauses, & today i felt a very sharp pain in the middle of my stomach & i am also costipated and feel bloated. I took a pregnancy test on thursday and it was  negative. Can this meant that my period is coming or that i tested too soon? HELP ME PLEASE!!!!