What could this mean?

I’m really confused. I have been spotting for a little while. A little over a week. Light brown, light flow, and a little bit of small clots here and there. I went to the urgent to see what they thought. They sent us to the er. We get there and they do all the test and what not. My cervix is close, and my levels were still high. The doc told me I’m probably still pregnant. But then we did the ultrasound. He said he wasn’t seeing what he was supposed to. We went to the bigger machine and there apparently was only clots. I was supposed to be 9+3. What could this mean? Was there no baby to begin with? He said I already passed it and I Remember every stringy clot thing. Nothing. I’m just so confused and in denial.