Did I ovulate?

Sierra

I'm so beyond discouraged. This was my first cycle on letrozole and I was beyond hopeful. On CD 13 I received several positive and eventually peak ovulation tests alone with fertile cm. I recently started BBT testing so I'm not an expert at reading them but usually they are pretty cut and dry obvious that I ovulated. This month it's not looking like I did because my temp has stayed almost exactly the same. Any advice would be appreciated. Trying not to get too worked up