Home-care measures to relieve cough include reducing irritating stimuli (eg, cold, dry air; indoor or outdoor air pollutants) that may provoke coughing. An upright or semiupright posture, such as sleeping with the head and shoulders raised, may decrease cough related to pharyngeal secretions...do warm saline gargling twice a day with OTC medication...Drink plenty of water.
Use a humidifier.
Try nasal saline sprays or rinses.
If the runny nose is a persistent, watery discharge, particularly if accompanied by sneezing and itchy or watery eyes, your symptoms may be allergy-related and an over-the-counter antihistamine may help...consult nearest physician for clinical examination they will do the needful.