HCG 377 for 4 weeks 6 days?

First pregnancy here! I got my first blood draw and Dr called and said my HCG was 377 and my progesterone was very very low so she suspects this is a non viable pregnancy. I go back in tomorrow to repeat.. My LMP was Sept 20 so that would put me at around 5 weeks? Is that not a normal HCG? Shouldn’t She put me on progesterone? Any thoughts? Would love brutal honesty right now...