I was on the patch before i got the shot on july I recently missed my depo shot on October 15 the last day for me to get it was on the 29 I had my period normal on October 11 but experienced on and off light bleeding after that but then it stopped.. I been having unprotected sex these days..I've been feeling nauseous and my breast hurt I'm not sure if it's the symptoms of the shot or pregnancy. Can someone help?