I got my last depo shot Nov 2012. It wore off on Feb 6,2013. I was on it for 9 months. I never did get my shot in February . Now a 5 weeks later, I am nauseous constantly (I threw up once), I have a metallic taste in my mouth, my breast are so sore to touch, I have headaches , cramps , and gas. Is there any way that I could be pregnant? Or is it the depo shots side effects?