Am I using these right?

I took the opk test out of it to eject i bought the pack that had 20 tests in it and the digital. I’m day 2 of my fertile week and still no smiley. 😩 am I using these right? I have a very normal 28 day cycle. We are TTC baby #2. Which one is the test line? I’m so confused it’s my first time using digital opk