Auzzi,
Don't feel stupid and don't worry so much about it. Everyone is different. Most people only bleed for 2 to 3 weeks. Then you have freaks like me who are still bleeding 9 weeks later...what great fun!
To answer your other question, bleeding after childbirth has nothing to do with the way your periods were. In my situation my periods were never really heavy and I would only bleed for 5 days. The bleeding that I experienced after having my son was much different. I'm not trying to scare you, I think my situation is less common. Try not to worry about it, you have better things to think about now.
Congratulation and enjoy every minute with your little one.