New to BBT

Jada

GM. So DH & I have been TTC baby #1 since 1/2021. We are going into our 7th month of TTC. I’ve tried almost everything within my grasp to pinpoint ovulation - OPKs, checking for fertile CM - all except BBT. I’m going to add that in this month along with Preseed to help but I mean how does it work? Is there a certain temp during your fertile window that tells exactly when you’re ovulating? And if so what is it? I know all women’s bodies are different but I’m just trying to get and better understanding of how it works.