What cm is this?

What CM is this? I am 28 days cycle. i am on cycle day 15. Normally I ovulate between cycle day 14-16. According to my bbt temps I didn’t ovulate yet. But due to some sleep disturbance and drinking this cycle I feel like my temps are inaccurate. I have 3 kids and we are TTC. I normally never have trouble getting pregnant. I have this gut feeling I ovulated on CD 12.