How often do you test?

New to all this. I have the ovulation strips to test, looking at all the posts I’m confused as to how often I should check. Once a day? Twice? More?

Thanks!

Edit- tested this morning and it was negative so I wasn’t planning on checking again till tomorrow morning. Glow is predicting tomorrow as my ovulation date anyway

2 tests today as below. Is there anything between the 2 that means I’m more negative or closer to being positive? Or is it just negative is negative regardless of the test line.

Sorry - I sound like an idiot I know!