Two kinds of coughs.
A non-productive (dry, hacking cough) is annoying by day and can keep you awake at night. Try taking a cough suppressant like Vicks Formula 44 about 30 minutes before bed. Chicken soup and lemon tea with honey may also provide some comfort.

Throat Sore?
A sore throat is a telltale sign that you may have a cold. Lozenges, throat sprays, containing phenol, can help ease sore throat pain. Gargling with warm salt water several times a day helps soothe too. Some people find hot tea, sweetened with a teaspoon of honey, soothing also. Vicks Cough Drops, and Vicks Formula 44 can all treat sore throat pain as well.