CONFUSED! When did I ovulated?

Xara
Here's my OPK tests and BBT chart for this cycle. Thought I ovulated on the 18th..is that right? Now that today I am 13 DPO, no symptoms, no signs of AF, BFN..I'm think I must have calculated my ovulation day wrong...what do you ladies think? Please help..this cycle is making me so anxious 😩