HCG and progesterone levels?

Hi, I went in for blood work at 3 weeks 3 days pregnant and the tests came back as 78 HCG and 35.1 progesterone. My doctor said these are fine numbers for how far along I am but just nervous after two back to back chemical pregnancies. Last week at 25 days my progesterone level was 17.5. Is it normal for progesterone to double like that in just five days? Hoping for the HCG levels to increase when I go back in tomorrow for another blood test!