Contrary to what some of the other moms say, bright red is not good! It's not horribly scary, or horribly wrong....but it IS a sign that you are doing too much. Back off of your business, lie down more...don't be afraid to "baby" yourself a little bit - you just had a baby and you need it! I think, sometimes, that we modern women are afraid to take the time we need following the birth of a child. We think we need to be on top of things!
I have 8 children, and what you are describing has happened to me several times. When I stop lifting so much, stop rushing around to clean house, rest more, the flow lightens. Yes, you may still bleed up to or beyond 6 weeks, but it should begin becoming lighter in flow and a little darker tinged in color.
(The advice to just stock up on pads is really bad advice!)