Unsure OPK

Meagan
I am so confused. We've been trying for a while, and I never seem to get positive OPK test results. I am on my first month of Clomid, and was hoping to see clearer results this month. Help, please! The tests are lined up in chronological order top to bottom. The middle test was taken yesterday. Was that the LH surge? It's darker than the other lines, but not as dark as the test instructions specify. I am so overwhelmed, and feel lost.