Are these getting darker??

Renae • 💙 '09....💙 '11....💔 '14.... 💔 '14....💔 '15....💔 '16....💔 '17....💜 12/12/17
I've taken these so far, do they look like there getting darker? Am I nearing ovulation? ​the top was taken at 1/13 on cd 11
​The middle taken at 1/14 on cd 12
​And bottom taken at 1/15 on cd 13 (today)
​I really don't want to miss out on O day!!!