How late after missed period did you get your BFP?

Whitney
I'm only a few days late, but I keep getting a BFN...not even faint lines. (Glow estimates 13 DPO) Im using First Response and it says you can test 6 days early, so I'm somewhat convinced that this is not my month. I'm trying not to get my hopes up, but I'm curious about how long it took others to get their BFP. I would love to hear your story!