Hey ladies, please reference the pics below!!!

I keep getting “low” on my clear blue digital and on the Easy At Home this is the first day I’ve gotten something a little darker than a faint line.

At first; my ovulation date was the 12th, but as I keep logging “low” LH days, Glow keeps pushing my ovulation date later and later in my cycle. I typically ovulate around CD18 and Glow is predicting CD19 based on these pics.

What do you guys think? Just keep testing (obviously) but should

ClearBlue digital show a “low” at this point in my cycle? This is my first time using it, and I feel like it’s throwing me off. I’m sick of determining color in my other strips like “is it darker?” “does it look the same color??” It’s just all throwing me off!!! Any advice?