Serum progesterone level at 44.5 with Letrozole 2.5mg

Hi ,

So I had my blood work to check for ovulation on CD20 but I got a positive OPK on CD 16 and the nurse told me my serum progesterone level was 44.5 and this is my first cycle on Letrozole .

However I don't have any symptoms I'm currently 9dpo and kinda freaking out . Is 44.5 a good level ?

Anybody had BFP with first cycle of Letrozole ?

Thanks .