Anyone got experience of bashed/bruised ribs they would like to share with me?

I fell over last Weds and gave them a hell of a knock. The pain settled down over the next few days, and on Sunday I thought I'd give running a go. Well, the running wasn't exactly a pleasant experience, but I got through 6 miles on gritted teeth. But then later that day I was virtually immobilised with painful spasms in my ribs everytime I tried to move. It's settled down again now, but it's pretty obvious running is a no-no at the moment.

How long do I have to wait do you reckon?