Did I miss ovulation?

My app says I’m 1 DPO/ CD 14.

Did I never get a positive? We baby danced the last 3 days (today included) but now I’m worried I should have been testing sooner.

Was CD 12 a positive?

This is my first month ttc so I haven’t ever used these test before and am unsure when I should test/how often/ if red or blue dye is better than the other?

Any tips or help is appreciated!