Opk testing advice pleeeeease ❤️

Gemma

Soooo did an opk yesterday afternoon around 3pm and had a near enough positive. Not quite there but soooo Close. Didn’t do another test that evening. Then did another opk today around 3pm again and the line wasn’t as dark as yesterday. More faint. Did I miss my surge? What could this mean? Please help a girl out. Thank youuuuuuuu