How many times should I do the ovulation Clear Blue test a day?

I hope you got the digital ones because I have found those to be the BEST! I will tell you that when I used them I tried both in the morning when I first woke up and then again around 2 or 3 pm. The day that I got my smiley face, I had tested when I first got up and got a negative....then got my positive at 3 o;clock in the afternoon! Next time I will only test in the afternoon and not in the morning because I have learned that the ovulation tests are not like pregnancy test in the way that you need to test in the morning. Unlike the pregnancy hormone, LH hormone takes a few hours after waking up to build up in your system so the afternoon testing is sufficient! Good luck and those smiley faces are super exciting!! =)