I'm so sorry you're going through this.
I had a missed miscarriage last christmas- found out at our 12 week private scan that there just wasn't anything there. We'd stopped growing at 6 weeks and my body just carried on as if I was still pregnant, the only sign was that my symptoms ebbed away around 8-9 weeks. We went home to our parents straight after and it was a horrible few days of waiting to know whether we'd miscarried or not, whether we'd confused our dates, as the private clinic was hesitant to say whether we'd MC'd. Looking back it was really clear we had, so when to spoke to the nurse at the hospital over the phone and she told me how it was, I was just grateful, so I could accept it and grieve.
What she said that was strangely common was that often the body doesn't release the pregnancy because our brains haven't accepted it. As soon as we know we've lost the baby, it's like our body goes into action. She told me to ring if I hadn't bled by the following week (it was an awkward time as it was just before Christmas), but I ended up starting to bleed on Christmas eve of all days. I was grateful I passed the pregnancy naturally as I'm not sure I could have mentally managed an intervention; I was able to do it privately and quietly at home. But it was such a strange thing, once my brain accepted it, my body responded. Everything passed within 10-14 days and at the scan at the hospital she was able to see there was no internal problems that had caused it.
People say all sorts of things to comfort you but it never really feels right, so I won't tell you it's not meant to be, or better now than later. I'm sorry you're in that time of waiting, not knowing whether to grieve or not. It's the worst part. But know our bodies are amazing and coping, and so are you. We're made of strong stuff, us, and even when we don't feel like it, we can get through anything.
I wish you the best of luck 
*Oh, and just for some hope, we fell pregnant rather quickly afterwards- we intended to wait!- and now I'm 18 weeks and looking healthy. I carry my MC with me every day and it's been a struggle. I'll never forget it. It's a part of our journey, if indeed that's what's happening. Lots of respect and love to you. x