Having a cold for about a week, it turned into this weird coughing thing that keeps me awake at night and last night I began having a sharp pain in my rib right under my left breast. I can only think it's from the constant coughing since I don't do any sports or anything. I have a hard time coughing, breathing in and laughing now. Even sleeping is an issue as I have no comfortable position to lay/sit in. Think I cracked a rib?