I am 41 years old. Have always had annual paps, always negative. I am overdue by 4 months, have an appointment, next Friday. I usually run several times a week, no medications. I always get 2-3 days of spotting before my period. I can always tell when I ovulate, no bc pills. This month I have brown discharge, it is the same consis as ovulation, slippery, etc. only brown instead of clear. Not enough for a pad, mostly when I go to the bathroom. I have not run at all this cycle, could it be old period blood coming out w/ovulation? No pain, etc.