What could cause spotting? I know implantation bleeding is a possible answer, however its nearly impossible that i'm pregnant. I'm a virgin and while my boyfriend and I have done some heavy petting we are always very careful about bodily fluids. I had my regular period dec 6 and a week later I had some light pink/brown spotting for 3 days that could be described as a light period. But was mostly visible just when wiping. I was really sick with some nasaeu, a cold, sinus pressure, dizzyness, etc. On christmas eve, but those symptoms have since subsided. I have noticed some slight cramping and low back pain and the spotting has not started again and it is somewhat heavy. I notice some burning, itching, and a fishy/foul smell and some discharge occassionally. I bought a yeast infection treatment kit and will try that, should I call the doctor right away though?