My period has ALWAYS been extremely regular (28 day cycle). I am currently 4 days late but keep getting BFN's every morning. I found out I was pregnant with my son the day of my missed period a couple years ago, so idk why I keep getting negatives. I have been using New Choice tests and BFP strip tests. Should I suck it up and buy a FRER? Tired of not knowing what's going on. Currently about 16 dpo, I believe.