Hello everyone I would like to say never I mean NEVER ! Buy these test they are faulty an they gave me a two month supply for free an it keeps saying the same thing one day an different another an my period is due an I was hoping for a baby this Christmas but unfornutely clearblue don't like me ! Don't ever get this product I've been using them for months an nothing im tired of seeing negatives when they say I'm ovulating its not worth the time or money or heartache !