If it's your cd21 progesterone, it supposed to be 15 or above in a medicated cycle. Progesterone below 10 may be indicative that you did not ovulate. Your RE may up your clomid or move you to injectables or something else.
A progesterone of 9 is a little low. They usually want to see at least 10 at 7 dpo. Maybe you could ask your doctor about a prescription for a prog. supplement next month if this one doesn't work out. Good luck to you!