I've been on the shot for a year & a couple months now & I missed my appointment tht was suppose to be on the 20th of June.. when I returned the nxt week in a half I got my shot but my bf & i had unprotected sex the same day. Now I'm going to the bathroom more than usual, I started spotting earlier this week; it's VERY light almost look pink, I'm cramping, have gas & heartburn, and backaches. My breast aren't sore but bigger than they were. HELPPPPP!!!