Opk help

Katie

Hi Ladies! This is my second month using OPKs. Last month I got a dark second line on CD 10 and on CD 18. All other days were clear negatives. I started testing super early this month, so I wouldn't miss the LH surge.

I came off the pill in June. Since then, I've had a 29 day cycle, 27 day cycle, and a 24 day cycle.

I started getting EWCM yesterday. When I look at the test line on the strips, it doesn't seem to be getting darker. Should it gradually get darker? I'm confused, and would love any feedback. Thanks!