My 7dpo progesterone came back at 38.4nmol/L (12.1ng/mL). Is that low?

Karina

My previous two cycles’ progesterone have always been around 65nmol/L (19ng/mL) - one ended in chemical, one was unsuccessful cycle, so this cycle is quite low compare to them.

Is it considered low? Or it’s still a good number for implantation to happen?