Hear hear re the days going quickly. There really is a market to put us ladies in some sort of medically induced coma during the stressful times and wake us up when it's time for a scan / good news. At this point in time I'd pay a lot of money for that!
As sad as that would be if it was the cause of your bleed, hopefully that means the heartbeat you saw was from a little fighter who's in for the long haul.
Skipping the conference sounds like a good idea, in the whole scheme of things none of that stuff is very important. I'm a bit like that about my course, I paid a fortune to enrol & last week I was thinking it could be perfect timing as I'll literally just be sitting there for 8 hours a day, but now that the bleeding a back I'm not so sure, maybe lying down is better...
Anyway I hope you go ok overnight. Feel free to pm me if you have a meltdown, I'll try and check regularly.