I have been on depo for 3 1/2 years. My boyfriend a certified medical assistant gave me my last shot. I have only spotted maybe 6 times since being on depo. I spotted the other week and that didnt bother me. Now I am spotting again but its a bright red and looks like mucus is in it. I have been feeling dizzy, nasueas (threw up soup friday and couldnt stand the smell), tired, bloated, constipated, and my body has been feeling sore. What could this be?