Period Changes after Birth?

If this question is stupid to you, please don't bother with any rude comments. I'm just really curious about this and will also ask my doctor about it this coming week. For you ladies who have already given birth, did you notice that your periods were different (less/more blood than usual, less/more cramps, etc) when they started back up? I had TERRIBLE period cramps before my pregnancy and I was wondering if they might be any different after I give birth?