I’m currently cycle day 17 with no positive opk’s yet. My cycle is usually 28-34 days. I had some brown spotting today, not much mostly when I wiped. I have only gotten high fertility on the clear blue advanced OPK’s, and no positive on the wondfo strips. Not even close to a positive on any of them. And my line appears to be getting even lighter? I’ve never had any mid cycle spotting in the 13 years I’ve been having a period. I’ve been tracking my OPK’s since cycle day 9. Any ideas as to what caused this?