Hello,
Im so sorry to hear about what you are going through...
I have had miscarriages before around the same time as you, and it can be very hard to see it all unfold... I used to go to A & E, simply because I found them very painful to deal with using just paracetamol, and wanted something stronger.
Also, I just found it reassuring, just being in the system, with staff there to monitor me and confirm things etc.
Let us know what happens. These things are so out of our hands; even when I was pregnant with my first child, I got a few small/medium size clots come out at around 14 weeks, but the pregnancy went ok. With my miscarriages, I saw heartbeats etc. at the scans - but still ended up miscarrying. So out of our hands!
You seem to be bleeding a lot, and with clots - it does sound serious...
The only time really that I was able to move on was when I had a successful pregnancy, it removed some of the hurt from the miscarriage...
There is nothing stopping you from trying again, or planning it this time with a different outlook, knowing that you surely want another now... and just because it happened this once, does not mean it will necessarily happen again...
Hope you are feeling okay.