My HCG and progesterone levels came back, HCG is 3500 but progesterone is 9.2. I would have been just around 5 weeks (give or take a few days) when the blood was drawn. The doctor said she likes to see progesterone above 20, but said that it doesn't mean this couldn't still be a successful/viable pregnancy. Would love any insight from anyone who had low progesterone levels or has knowledge of how low is too low. Thanks for any input!