HCG levels early on?

Sa

I had the following two levels about 30 hours apart.

12 dpo : 36

14 dpo: 50

My doctor said it’s not what they hope to see as it hasn’t fully doubled....but I’m so early and didn’t even test 48 hours apart. I just did my third draw today (16 dpo) and will get the results tomorrow.

Has anyone had something similar happen and ended up with a normal pregnancy? I just had a miscarriage at 9 weeks in July...I’m really praying this baby sticks.