Cervical mucus ...

Sooooo I know you can’t go off your cm for anything but is there anybody in their tww who’s cm has changed? This go round I’ve had nothing but stretchy cm rather it’s creamy looking or yellow ... i always know my period is coming when I get EWCM just before . But I don’t know how ima be able to tell now that I’ve had it the whole entire wait. Did this happen to anyone and turn positive ?