what if i had my period on march the 23 through 28 and come off on the 28 in 2013. Then I started to spoted in april 5 6 7 8 and then come off on the 8. what can that be. implantation or my period or can i be pregnant. let me know is it implantation or my period or can it be im pregnant please let me know which one is it. scary