The advice for you is to avoid talking in the first few days. And the most common and at the same time effective method is to rub with salt water as a treatment. Gargle with salt water at least four times a day. You can also mix menthol (you can find it in drug stores) powder in hot water and inhale it. Mild hot lemonade and ginger are very effective for broken throat. Since you have a cold, you can take Fexofenadine antihistamine once a night. In addition, if you have a sore throat, you can take paracetamol twice a day. Don't let it get cold any more. However, if the cough lasts for more than 4 weeks, you must consult a doctor. Thanks