I went on the depo for the first time in the middle of may,i got my period for may and june and july. I had unprotective sex and my boyfriend climaxed in me after my period in july. Its now september 4th and havent gotten my period since july. Ive been having nausea for the last 2.5 weeks and other pregnancy symptoms. Could I be pregnant? for the record I did not go back on the depo. i just don't know if I'm pregnant or if this is normal on the depo?