Am I going to ovulate?

I am very new to this app but so glad I came across it! This is my first cycle opk testing. These are photos of my OPKS over the last 6 days. Yesterday’s opk seems to be darker then today’s and I’m not sure why, I haven’t ovulated yet. Why would it be more faint today if I haven’t ovulated? Is this normal? The last test was taken 3 hours ago, is it too early to test again? very anxious and new to this , anything will help!