That's a good sign!! You're coming down from your Post-O/AF level temps.
I'm not surprised you've got a faint OPK at CD10, that's normal. My CD10 OPKs are usually close to stark white, but by CD12... that test line starts getting dark.
What's going on with your CM today? I don't see it marked on your chart...
I'd definitely BD, but I wouldn't feel like you have to go crazy just yet. It's definitely a good idea to cover your bases.
But I think your chart is looking really good... your temps definitely seem to indicate that things are cookin'!
Best of Luck & Baby