Possible miscarriage?

Kelly

So two days ago at exactly 5 weeks my hcg was 804, and progesterone 14.81. I have been taking 200 mg oral progesterone since my BFP, but the doctor was concerned because 14.81 is still low. Yesterday I started spotting brown. Today it has lightened up, and I only have been spotting a tiny bit when wiping, still only brown. I went this morning to get bloodwork again to see if my hcg is doubling and check my progesterone. I have had two miscarriages earlier this year, both around 4-5 weeks. Could my spotting be because of low progesterone? Am I most likely miscarrying? I know the only way to know for sure is to see if my hcg has doubled, but I won’t find out until Monday. Has this happened to anyone and they have had a successful pregnancy? I’m going crazy over here!!