Did I miscarry?

So I have been cramping and bleeding for about 3 weeks, bright red blood, lots of clots. Today they decided to draw blood for a pregnancy test to see if maybe I was having a miscarriage (if I did, I didn’t know I was pregnant). I did suspect I was pregnant cause I was having symptoms that I only had when I was pregnant with my son but I took a test (was before I started bleeding so over 3 weeks ago) the test came back negative and then I started bleeding about a week later and figure I couldn’t be pregnant cause I thought it was my period. I have never had this happen before, I would normally have 9-10 day period but it’s been 3 weeks and they don’t know what else is/ could be wrong with me. Would an hcg of 3 mean I miscarried?