Stop doing work and cease any unnecessary occupation with bodily exhaustive parts. Try to sleep well and long. See your doctor to check if it is a cough with different causes than usual. Viral infections or bacterial need different treatments. Make sure the infection isn't expanding to the muscle system including your heart. Give yourself time. Make sure not to infect others or reimport your infection from others. See your doctor. Tell him it is already a longer term cough. It could be potentially serious. Do not make it a disaster by ignoring it.