I have broken, bruised or cracked every rib back when I was racing motocross (I crashed alot). It's no fun, and the best way to heal is to just take it easy for a few weeks.

It hurts, it sucks and there is little you can do for it. Coughing hurts, sneezing will put you to your knees. Just dont over medicate for the pain, sometimes you just have to bear down and get thru it.