if it makes you feel better, mine doesn't even bother testing progesterone for IVF patients, we all just go on supplement progesterone....
you should be able to see development on ultrasound in 2 weeks and you should see a heartbeat then as well.
My dr wants to see progesterone above 30--but he also said he's seen levels of as low as 9 that resulted in a healthy pregnancy/live birth. Try not to stress...