I am on cycle day 19 and had very light spotting this past saturday and monday (cd 16 and cd 18) almost non existent and only when I wiped. Last month my ''period" came on cycle day 18 and lasted 6 days of very light spotting. My cycle is 28 days give or take a day. Has anyone experienced this and what was the outcome? Pregnancy test was negative. I have no health issues and take no medication. Im completely confussed.