i started depo for the first time in December 2011 , i got off depo march 2012 . every since ive been on depo ive been having brown discharge ; on may 9, 2012 i had unprotected sex . i think i started my period (light) on may 28, 2012 i normally have my period for five days will it go back to normal ? is this really my period ? could i be pregnant ?
Any time you have unprotected sex after stopping the birth control, you are at risk for pregnancy.  It is possible that the brown discharge and light bleeding is related to pregnancy.  However, it is not likely, as most bleeding is not due to pregnancy, but more likely it is just a period, and it, may take up to nine months after the demo shot for your periods to return to normal.  If they don't become normal by then, you should see your doctor to figure out why your periods are not normal and to get treated for that problem. I would recommend that you take a pregnancy test just to make sure.  I hope this helps, please let me know if you need any more information.