Anyone know what this is?

I am like CD12 and my cycles are irregular so im not sure what this is because idk if its close to ovulation or not, especially because my OB thinks I ovulate closer to CD21 rather than CD14. But with being only CD12 I'm wondering what this may be? The color is whats worrying me. (Looks like blood in the pics but it really wasn't that deep in color in person, more like just tinged. It only happened that one time this morning.