I just got time to visit your diary and I am really sad to hear that you miscarried and lost the baby : ( It just like what happened to me last year...at least you're ok.
My doctor said that it's the way your body tried to get rid of something that is not developing correctly..maybe it's a blessing in the sky that we lost the baby at the early stage...better than having the baby with the problem later on.
The bleeding might last for a week and you should take a lot of rest na..anyway, before you have your scrape procedure done on Saturday you should do a pregnancy test again (the doctor might test it too) to make sure that the baby is really gone (your pregnancy test should be negative..meaning you're no longer pregnant)...you know, just in case.
Anyway, take care and don't worry...you already have 2 wonderful children!