Persistent cough & hurt bottom teeth? What is wrong with me?

I keep having a persistent cough...very sporadic. I will be fine for most of the day then get this cough cycle start. The cough doesn't sound wet & rarely do I have an mucus from it. I've tried everything...allergy meds and cough meds, nothing totally gets rid of it. Then, to top it off, my front bottom teeth are hurting from out of no where. Not sure what this might be...no health insurance so I need some answers...thanks.