Vick, I would call the doc....it may be something, but it sure warrants being checked out just in case. Even if they do not really treat a rib fx, it is worth it to know if you actually have a fracture or or a pork chop bone. I vote for the porkchop bone...
And don't beat yourself up over this, not like you had any control, so it is not fair to call yourself a dope!
Hope it is nothing and the pain goes away quickly...
L&H,
Lori