Thoughts please!!!

OK ladies AF is supposed to be here on the 21st.......but let's back up here. According to my apps and me tracking cm I ovulated on the 7th or 8th. But starting on the 5th I had very little spotting which started out light pink for 3 days then brown and ended on the 10th. That's almost a week of it. I had no cramps or anything. Now its almost 1 day till AF and I still have no signs of AF coming her way. (I usually have signs of her for about 3 days before she shows) but my question was could I have ovulated earlier or really late in my other cycle and that be ib or could it of been ovulation bleeding in which I had never had before until this time.