This is my first time using wondfos (last time I used digitals so I was sure they were positive). This is from yesterday at about 10:30pm (taken within the window).
Wondering when I should take another OPK this morning. Not FMU?
I've marked it as positive on my chart.
EDIT: I tested with FMU and the test line is not as dark as the control line. Test again this afternoon?