I ve had a pretty bad cough the last few weeks, went to the Doctor and have it under control now, but two days ago I coughed so hard I felt something on the right side of my back - very sharp pain - and believe I may have strained something. It doesn t really hurt when I push on it, but if I cough, it feels like a knife in my back. Do you think rest & pain meds will heal this problem or should I get an x-ray, etc.