Help!!! Which do I believe??

ju

I have two clearblue advanced digitals. The one is from my last box and I got a new box because I ran out of sticks. So I have been using both. I got flashing for the past 2 days on both. Tonight I got a solid smile on the old one and still a flashing on the newer one?? Which one do I go by? I am only CD 7!!

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