I'm having severe back pain!! I got the DEPO SHOT a couple day after I started my period. I stopped having my period that same day. However the next day I was spotting, but it soon stopped the next day and hasn't returned. I have had unprotected sex twice since the DEPO SHOT. But this is still my period week, am I just cramping with out a period? Is that even possible? PLEASE HELP ME!! I'm super nervous! And I scared to take a TEST!