Sorry it wasn't better news.
My MMC measured 3mm at 8+5, by my follow up scan at 10 weeks it was 2mm. I was sure of my dates too. I found a few good news stories out there, but when I looked closer they all either had the dates wrong or baby hadn't been seen at all. I didn't find any good news for 8+ embryos measuring 3mm when dates where certain being ok.
I found the wait between the scan and the repeat scan absolutely horrendous, especially as the EPAU told me there was still a chance it could grow. I tried to think of the gap as a chance for my body to miscarry naturally, but I couldn't help but try and hang onto any tiny bit of hope I could.
I found a lot of support from the miscarriage forum on helping me decide on my treatment options so at least when I went in for the follow up appointment I was already aware of my options so I could at least move straight onto the next step.
Feel free to ask me anything, either here or in pm. I've also got detailed stories filed under miscarriage in my blog (see sig) about my experiences if you want to hear the full story and are ready emotionally for that part of the journey.
ETA: sorry if I sound a bit blunt or negative, but I found false hope wasn't helpful at all. I'd much rather have gone in expecting the worst and had a nice surprise than wishing my life away for thsoe 10 days.
Also what date is your next scan? Its so close to Christmas.