I have a bad cough which started after the flu in may 2017......i cannot get rid of it.....i have ask my doctor but she said it would disapear in time?

Chronic cough: can very well be your sinuses with chronic post nasal discharge causing the lingering cough, it can last for weeks after a cold, but months, that needs to be treated. Ask your doctor for an ENT or an allergist / immunonlogist referral, check aaaal.org or acaai.org for an allergist in your area. Meanwhile, use saline nasal washes often, best wishes

Cough: cough lasting for months needs investigations. Its possible to have post viral cough which usually disappears within few weeks . whooping cough , asthma, COPD, and more sinister causes can present as persistent cough. Please consult your doctor or chest physician.