im so confused

Shawn

ok so I need y'all ladies help I had my period last month from the 26-28 and went to the doctor and got my depo shot on the 29 I was told to have protected sex a week b4 having unprotected sex but I kinda didn't listen within that week frame and I had sex just bout the whole week after my shot I been feeling sick but haven't thrown up not once been having cramps and hack aches headaches tired Durning the day more but up at night my boobs feel really sore I want to know could it be possible that I had gotten pregnant or is it the depo side effects????