Ooooh. Looks a bit painful Ed.
Even if you've just bruised your ribs as opposed to any fractures then it'll still be bloody painful for a while.
I had a crash about this time last summer and hit the ground hard on my left hand side. I did visit my GP 2 days later, as by then my ribs were really hurting alot. I was referred to A&E but I wasn't x-rayed as they didn't think I'd broken anything.
I was on strong Co-Codomol for the pain for about four weeks along with regular Ibruprofen. All in all it took about twelve weeks to fully recover.
The worst thing was that it restricted me to light cycling duties only.
Hope you recover quickly Ed, just don't sneeze, cough or laugh.