The problem is you're comparing yourself to other ivf women on here who are loaded up with progesterone supplements and have really high numbers - way higher than it would be naturally. In the first six weeks or so the average natural level is like 27.
Also, progesterone has been shown in studies to go up and down during the day. So a BT in the morning might have a different level to the evening.
See the pic below, for natural pregnancy at six weeks the average is 25 up to about 45. So your progesterone is high, not low.
Your FS sounds a bit mean though he could have given you some more info to help you understand.
Chill out baby, you're preggers!
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