OPK Questions

Patricia
This is my 2nd time TTC after a miscarriage in April. Before I got pregnant, I only tried to use an OPK (Clear Blue Digital) for the first time after 6 mos TTC and got my BFP. Now, I am trying to use the generic ones (because CB is crazy expensive here) and I can't seem to get the correct rhythm of doing it throughout the day.
My questions are:
Does the test line in generic OPKs go as dark as the control line or maybe even darker? I have tried to destroy the Clear Blue that I had before to see the strip inside and it wasn't as dark but it still gave me a smiley.
I am now trying to do tests 3x a day just to see when should I test the next time. When should I test? Does ovulation come the same for everybody like during the afternoon, or does it vary for every person?
Does this look like a positive?