AF is 12 days late and still no bfp

Kelsey

AF was suppose to show her face Oct 16th. I have been a few days late before but never this late. Cycles between 38-40 days consistently. Took a peestick 3 days ago but still bfn. Been extremely nauseous on and off for the past 2 weeks. Is it possible to still get a bfp? What is the longest it took you to get bfp?