Also, whether or not you do have a rib injury, try holding something like a pillow to your side if you need to cough, or sneeze, or laugh.... I know I know; how can you just happen to be ready like that? I dunno. I just know from hospital patients who can always have their's handy.
Another thing... be sure to take deep breaths... your brain still wants oxygen!
You might want somebody else to do your cutting for quilting until you heal, from whatever injury you incurred. Just sit quietly and quilt or plan your next projects.
Cathy