I am 29 and at least once a year I get pneumonia. I have already had it about a month ago. Usually my ribs are sore for a week or so after from the coughing, but this time I am getting severe cramps on the left back side of my ribs that I thought was a pulled muscle but it seems to b getting worse rather than better. It bothers me because it is not something I have experienced before and because the more I try to ease the pain the worse it hurts like a charlie horse in my ribs.