I don't know how many dPO I was when I had my first blood draw, but I think I was about 11-14 dpo and its was 344, which the ultrasound tech said was on the low end, but my doc said it was fine, and was actually pissed she had said anything to me. Anyways since then I've had a draw every 48 hrs and my numbers have been more than doubling; 344, 844, and then in three days it went from 2200, 4400, 7900 for my last. My point is I started out "low" but it's clearly means nothing. What matters the most is the doubling. As long as your doubling every 48-72 hrs my doc says it shows a healthy pregnancy. Keep us updated!! And go look through old threads and you'll see similar posts from women that went in to give birth and that reassured me while I was playing the waiting game ☺️.