Advise Please! How may days passed missed AF did you test?

Sharla

Morning ladies, So I’m currently 4 days late. AF was supposed to come 1/31/2020 and she is regular. I had some very light brown spotting early morning only fri, sat, and Sunday not enough to cover a panty liner/pad or anything and nothing when I wiped. There has been no spotting since yesterday. I have some tenderness in my breast. I’m Ttc baby number 1. Would greatly appreciate some advise or to know if anyone has ever experienced this before.