Thanks for your query.
Firstly, what you describe sadly sounds like a miscarriage
The bleeding, passage of clots and cramping all goes in favour of a miscarriage.
Mostly, you would have aborted by now.
There is a very slight possibility of carrying a baby right now, going by your description.
You need to wait till your repeat B HCG
There is no point of stressing out till then.
Please be positive and keep calm.