Going in to check things out

My RE is letting me go in this afternoon for an u/s and another blood HCG. I started bleeding yesterday enough for a pad. I’m currently really crampy and bleeding a lot with dark stringy clots. I won’t SAY that I am miscarrying, because I have cried that often enough when it hasn’t been true. I will say that I won’t be surprised. I just don’t see how you can bleed this much or spot this long without it being something bad. I’m feeling tired and sad, but mostly numb.