HCG & Progesterone levels... Help!

My doctor's office called me and told me I am being put on Progesterone supplements. Apparently my blood work (Friday) was a little low.

I asked the nurse for the number and she said the doctor didn't day where they should be but it was 10.2. My last AF was on May 29. Should I need worried?

I'm new to this TTC after having a miscarriage at 6 weeks in October.