3-4 days late!!

Tasha • Mom of two and undecided if I want another child.
I was due according to Glow for AF on the 13Th and when I updated my daily chart it moved it over another two days. That made AF to the 16th and still no AF. I marked it again as period is late. I took a pregnancy test the morning of the 23th and it obviously a BFN. how long should I wait to retest? What test are the best?