Thinking ahead on OPK

Megan • We started our baby journey back in 2016. We spent 2 years trying to no avail- broken heart after broken heart lead us to fertility, where we were quickly told that our chances of conceiving naturally were under 2% due to male-factor infertility. But tha
So, new cycle starting and I'll be back to the OPKs next week:/ My question is, I'm using the CB advanced digital, and it's lasted 3 cycles. Should I continue to use that monitor, since it already "knows" me, or start a new one since it's past it's prime?