Bleeding after clot

Elysia • Baby girl born Feb 2019!! 👶💖 followed by 3 angel babies 👼

Positive tests last weekend, started bleeding yesterday, worse bleeding was around midday today with passing a marble sized clot and then the bleeding has lessened to spotting...

Anyone else experienced this? Is it possibly a miscarriage or could it be a good sign?

I get second hcg bloods done tomorrow evening