14dpo BFN - BFP later?

Sarina
Today is cd33 and 14dpo. My average cycle is 27-30 days. But once in a blue moon I have had an off cycle and be extra late. 
I tested yesterday at 13dpo and I was negative.
Had cramps on and off since 11dpo.
Today on 14dpo I had 2 dark brown spotting only when wiping. I figured AF finally arrived but its been several hours and my pad has zero spots on it! But I have been cramping all day today!
I plan on testing again tomorrow and hoping for a BFP. But I am assuming my cycle is just playing tricks on me and is just extra late this month. It likes playing mind games with me! 
Been trying for a year now for our first baby and no luck yet.
Has anyone gotten a late BFP??