My husband had a very bad cough....actually, think he might have had a bad chest infection, but refused to go to the doctor. At times,he coughed so hard, he had to hold on to his head.He is on the mend, but notices that his head hurts at times since this, especially if he coughs.....is it possible that he could have gave himself a slight concussion....its been two weeks since he developed this cough....