Progesterone supplements and BBT

Sa

I'm pretty sure I ovulated on Sunday (according to blood test and positive opks). Bbt was 97.4 on Sunday (

<a href="https://glowing.com/glow-fertility-program">IUI</a>

day), dipped to 96.8 Monday. Started taking progesterone last night and it's now at 98.04.

I'm wondering how much the progesterone is affecting my bbt. It's obviously boosting my temp, but by how much? Can I trust BBT at all while taking it?