Best way to rid of a chronic "viral" cough that has lasted for 9 weeks? I have been to two doctors who cleared me for whooping cough and any infection

Allergies. This is not likely viral but is very likely allergic. You could start with an over-the-counter allergy medication like Allegra or zyrtec. Use a neti-pot to clean your nose. Drink lots of water. You may need a nasal steroid but you will need to a doctor for that. Good luck!