Had a chest infection all week, started with a bit of rib pain from the constant coughing on Tuesday which has just slowly got rose as the week has gone on. However last night I coughed and felt such an intense pain in my side, since getting up with morning the pain is unbearable, I can't move, breathing hurts, the pain is now radiating in to my stomach and it literally feels like my side is about to pop open. Could it just be a pulled muscle or could I have done something worse? Has anyone else ever had this?