low progesterone high hcg???

Looking for some advice
On Friday I got bloodwork to confirm my pregnancy
On Friday I was 3 weeks 5 days
Progesterone level was 25.24
Hcg level was 504.70
On Wednesday I got bloodwork to confirm progression
On Wednesday I was 4 weeks 3 days
Progesterone level was 20.66 (decline)
Hcg level was 4671
Is it normal to see a drop in progesterone but increase in HCG?? I am so worried ....