Hi! the best way of getting your rib better is driving! just force yourself driving! this is race! rest? no way!

lol, well, im kidding, i got a rib injury during the summer practise, and i rest for 5 days, as the time consuming, i forced myself to drive... and after few stints, things got really bad, the rib was becoming very painful.. but i still forced myself driving on reverse track just to reduce the pain, and finally i couldn't drive back to the pit..and i had to stop driving at all, then bought an air-ticket back home.. luckly enough, there's nothing wrong with the rib-bone. it didnt pain at all about 20 days later,
dude, if got your rib injured, there's no need to drive, just go for the doctor and have a rest until you make sure it's all OK at all!
im thinking of getting a smaller seat and having more fitness training to ensure i won't get injured during the winter practise.
hope there's nothing serious with your rib ! good luck