Ovulating late?

Noel
Hi ladies! Just any thought?
My cycle is always been 35 days so my next AF due on June 23th and my OPK test strip been fairly lighter color than the control line. On this passed Sunday the 12th I tested for fun and didn't look at it for 15 minutes or so. When I went look it actually darker than the rest of the tests that I did more than a week ago ( my fertile week). But is this considered equal or darker color or lighter than the control line? 
 If so wonder why I ovulated so late 🤔 I trusted the fertile window the whole time hmm .. This morning I tested and it was a little lighter than yesterday
This picture was from Sunday morning
From top to bottom: Sunday morning, Sunday night, Monday morning.
Thank you for any explanation at all 💋