I only bled heavily for about 3 days, then it was like a mild period for a couple days and then spotting for about a week. But I got off easy on this one, I think. When I was on 0-3 with DS, I remember girls who were still bleeding at their 6 week PP visit. Also, I tended to start bleeding again if I overdid in the weeks following.
Trust me, you'll be thankful for the giant pads when the time comes lol!