I had my period sept 17-20 very light on the last day, so I took out my tampon and then the next day I didn't bleed all day until I got home which was around 4p.m. to notice I had spotting in my underwear. I had sex a week before my period and then 3days after my period. Today is sept 29 and these past two days I have been nauseated all day, headaches, and increase of discharge. Idk if I could be pregnant, catching a bug, or just ovulation ...but I don't ever feel like this when I ovulate. Any help please??