How long should you bleed after a membrane sweep?

Ai

I had my membranes swept yesterday. Bleeding is to be expected and there isn't a scary amount. I'm wondering how long the bleeding is supposed to go on. It's been 20 hours. I'm not used to wearing a pad, it's itchy! Also, they weren't kidding about the cramping!

So what do you think... What is the normal about of time to bleed after a membrane sweep?