broken rib?

I'd go to a Doc and get an X-Ray done. It does sound as if you cracked or broke it. Unfortunately the voice of experience recognizes those symptoms. If you feel a sneeze coming on try to hold your sore rib(s) so it/they don't flex. It'll take about 4-6 weeks to stop hurting BAD.

See a Doc. Good Luck.

I've broken ribs several times, it is my most frequent dirtbike injury! You really should get it checked out though, busted ribs can poke holes in important stuff like lungs.

Hey wizard, trust me on this one don't screw around. I broke two ribs a couple months ago. By the time I got home from the track, unloaded my bike etc. I could hardly breathe. At the ER I found out my lung was puntcured and had to put a chest tube in me. Not Fun! Three days in the hospital.

Even if it's broken, the majority of the pain is probably due to cartilage damage between the ribs.
I've had as much pain when I didn't break ribs as when I have.
People might not consider the protection that a chest protector can offer over just deflecting roost. I recently cased a double, landed hard enough to break both wrists which blew my hands off the bars. The suspension unloaded on me about the same time my chest planted into the bars. Bruised ribs on both sides, but no breaks. My chest protector was folded inside out curving away from my body after impact. I've done much less without a chest protector and broken ribs before.
Now if I could get rid of at least one of these casts. It sucks trying to function with both forearms casted. I wonder if I have enough metal in me yet to set off the metal detectors.
Scott