I am lost

Lorena • Mommy of 3

I know I’m not pregnant. Af is due tomorrow. bbt dropped, so I know she is coming. I am 13DPO

I am on progesterone. Started 3DPO, took last of them last night.

I was told that it keeps you from ovulating.

Would it keep me from the LH surge some get right before AF?

Took an opk & its up there