Need help with my length chart!!!

Mrs. • Finally have our babies. R.I.P Kimara Jeffers. Welcome 2 handsome boys Allan and Kayden Jeffers. 👧🏾👼🏾👶🏾👶🏾👦🏾
Ok I'm like confused with this one. 
I'm cd 3 on AF. what is my cycle length???? I be thinking I'm getting it all wrong.