Please don't get me wrong I understand how to use them but I find I never get a very strong or consistent response from them..I had this before my DD was born so I was deff ovulating then. The cheapy ones often give me a very low uptick but only for a few hours so if I forget to test at that time then I don't get any positive response. The clear blue some months work and other months gives me days and days of flashing smilies.
It's so frustrating. When I do get the increase it seems consistent on the day (roughly day 15-16) so I'm going with that but it's annoying to test and not get a positive.
Just wanted to commiserate