Can someone answer a question for me....

Last month I used a clear blue digital OPK. I had my low days, high days, and the day I got my smiley face, the peak day, I stopped using it as I read.

Well now it’s a new cycle and I have about 10 strips left from that pack. Can I reuse the digital reader again or will it not work or be inaccurate? I can’t afford $35 each month for a pack, but these take the guessing game out of the equation.

Any assistance would be much appreciated. Thanks