I been on depo since December and had aperiod in jan. feb. and when march I didn't and that's when I startedhave unprotected sex and I been having every pregnancy sythom there was but I took a test and it said negative my mother said it could be to earlyto detect but my periods are irregular that is why I got on depo could I be pregnant and the test could be wrong and all I have is really bad back pain and mild cramps and a little pressure when you touch my stomach it be very tender