Hi, so sorry you're miscarrying. It's so shit, so give yourself the time you need and allow yourself to feel what you feel.
I had two, and they both happened at home (which I'm glad about). They both started with bleeding for about a week, then I passed everything at home. I did have a scan both times - the first time showed measurements at 5weeks when it should have been 6.5 so I was told to come back in two weeks to see if a heartbeat was formed. Everything passed the day later so I didn't need another scan. They told me to do a pregnancy test in two weeks and if it was negative then no further action, if it was positive then I had to call the EPU, presumably because everything hadn't passed (it was negative so I didn't need to go back).
The second time I had bleeding for about a week, had a scan at the EPU and everything was fine, saw a heartbeat and everything. 3 days later it happened again, and again everything passed and I had a negative preg test 2 weeks later.
Going in for a scan didn't change anything. Nothing can stop a mc once it's started, so if you're happier at home letting it happen (I know I was!) then get yourselves the good pass and lots of pain killers, and prepare to wait it out. I've read on here that people have had horrible experiences where they've been in terrible pain on the bathroom floor. That was not my experience, I had pain but it was manageable, and so was the bleeding. But if you're worried you're loosing lots of blood then do go into a and e.
Take care of yourself, it's an awful experience. It takes everything out of you so curl up for as long as you need to 