BBT and ovulation

Taryn ⛵️

Hi,

I know this isn’t a full month of BBT tracking, but based on this I’m trying to estimate when I may have ovulated. My interpretation is CD13, if my BBT is also elevated tomorrow? The day of ovulation is the day of the temperature dip correct? Does it dip before or after ovulation?

Also, up to CD13 my OPK lines were getting darker, but after CD13 they have been getting lighter. I never had a positive OPK, so maybe I missed my surge? We plan on BDing tonight either way :)