First month trying OPK Testing

Samantha

This is becoming very frustrating. The <a href="https://play.google.com/store/apps/details?id=com.glow.android">Glow app</a> says I should have ovulated 2 days ago. I am on CD18 and am still getting very clear negative results. Anyone else have tests that look like this? Any thoughts on how close I might be to ovulating?