All the symptoms & still negative.

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!!!!