Jo,
I'm sorry for your loss. I can't even imagine how you must feel having it happen to you twice. I miscarried at six weeks along also on Sunday. You mentioned that you kind of had a feeling about this pregnancy, I felt different this time than I did before when I carried my kids, I felt worried, and even came to this board to read about miscarriage. Maybe it's some kind of instinct.
My thoughts are with you and I hope you recover quickly, and you never have to experience this again.
best wishes,
~~heather~~