I have a regular 25 day cycle. I figure I am around 16DPO according to when my "period tracker" says that I should have ovulated. AF was due this past Saturday and nothing. I took Target brand test both Saturday and Sunday and nothing. Also, normally I cramp and spot a day or two before AF arrives so I can always tell when she is coming but there is nothing. No cramping no spotting either. Anyone else have this problem or ever had it? When is a safe time to test again?