Late BFP and low hcg

May 31st at cd47 and 32dpo I got a blazing dark positive.

When I tested May 22nd at cd38 and 23 dpo it was negative.

Last week I did have blood work done and my dr put in for a hcg test because he knew I was late. They called yesterday and said my “hcg is 37 so you are indeed pregnant”. I didn’t think until later 37 what? I feel like for being what should be about 6 weeks pregnant that’s low. Perhaps they meant 37000 or something? I’m terrified since we had a miscarriage in February.

My drs appointment is tomorrow, my husband won’t be able to go with me and I’m stressing myself out over it all.