I also had an abruption. Luckily I was in hospital at the time.
I had pain in my uterus, which they put down to ligament pain (even though it felt like my bump was a bit of wood) and he hadn't moved since early morning.
I didn't push enough to get his heart rate checked and every day of my life I regret that.
I felt relieved when I felt one weak little kick when really it was nothing to feel relieved over, it just meant he was alive, not that he was well.
At 5pm I had a bleed, but internally I had been bleeding from 9am (the cause of the pain). There was a 10cm clot behind the placenta and by 6.45pm when DS2 was delivered he had suffered from oxygen starvation at some point during or leading up to his birth.
He has cerebral palsy, and it haunts me that had I just been that bit more pushy and asked for his heart rate to be checked it would have been picked up sooner and my little boy would have walked much earlier, he would be able to talk at 4 years old (which he is still unable to do) and so much could have been different.
So go, get your babies bombarded with soundwaves to wake them up!