Heart Broken and Confused

Chelsi
I was told on Wednesday (6 weeks pregnant) that my levels weren't doubling. In 48 hours they only went from 4262 to 5104 and that I would eventually start to miscarry. They want it to happen naturally. It is Friday afternoon and I haven't had anything. No spotting, no cramping, nothing.
I just want what ever is going to happen, happen. It's such an eerie feeling that this baby I was so excited about is no longer developing and I'm just waiting for nature to takes its course. I feel like I can't move on until that happens. 
Has anyone else experienced this?