3 days late

Ruby

I have never missed a period. I’m regular each month. I’m 17 days post ovulation and I’ve taken MULTIPLE pregnancy tests and all have been negative. After reading several posts I’m guessing I should wait until I’m a week overdue from AF and then recheck it call my OB. Also have been having nausea since ovulating and have had cramps and lower back pain. I’m guessing I ovulate later than glow projected.