It would seem mine is.
I'm using persona. It's my own machine, used it for years in between my pg's.
It always asks for a test on cd6 (routine), mine is always a green light because I O somewhere between cd18-20, never earlier. This morning is cd6 and it says RED!?!
I have got cramping and period has been and gone. Does anyone have any idea what could be going on or do I put it down to last month?