I bled for at least 6 weeks with all my kids (i had VD's) then my first period after was scary!! I thought i was dying, i was bleeding that much!
This is probably info overload but i was bleeding through a heavy duty tampon AND a heavy duty pad within an hour and a half! Apparently this is quite common!
It's not something that they warn you about in books though! Thats why i tell those who have just had kids not to freak out, just see a doc though if you get a bit light headed from blood loss!
I wouldn't worry too much about your initial bleeding though. i think its meant to go on for a while. I think it is nature's way of saying "well, you haven't had your period in 9 months...so cop this!!!"