Need help!!!

Mrs. • Finally have our babies. R.I.P Kimara Jeffers. Welcome 2 handsome boys Allan and Kayden Jeffers. 👧🏾👼🏾👶🏾👶🏾👦🏾
My af went off yesterday, that was cycle day 6. 
Today (5/29/15) on cd 7, I spotting brownish. I don't know what is my cycle length. I'm not sure 😕😕