Low HCG Levels

Kendra • "No one can make you feel inferior without your consent." ~Eleanor Roosevelt

I found out about my pregnancy through a blood test on July 9th. I was 12 dpo. I was immediately put on progesterone due to previous miscarriages. They're doubling but, the nurse sounded so negative on the phone. They don't even want to schedule a prenatal visit until a 3rd blood draw. I don't understand. I thought that the number didn't matter as long as it doubled.

Here are my levels so far:

HCG

12DPO(July 9th): 11.1

14DPO(July 11th): 24.1

PROGESTERONE

12DPO:6.3

14DPO:12.6

I think that these look fine. What's the problem?