Progesterone levels?

ma

Hi all, I'm currently taking letrozole 7.5 (cycle one but went through letrozole 5 , clomid 50 & clomid 100 with no response) I went in for my progesterone test today, hopefully have the results tomorrow, I am wondering what a positive (I ovulated) test number would be? Does anyone know? Anyone who got pregnant what was your progesterone level on CD21 LABS?