16DPO and a BFN

Lauren • My fiancé and I have been TTC for over 2 years now! Trying to Remain positive. Good luck to all of you lovely ladies ❤️
Hey ladies, am currently 16DPO with AF 3 days late. (Glow said AF due yesterday but I'm always 2 days early). I did a HPT yesterday morning and it's a BFN. Am I out or is this relatively common? Thanks in advance X