What should you do when you have a clod?

What should I do when I had a clod? First, I will drink a lot of warm water. Then, I will eat some Vitamin B & C to increase my immunity. If my cold was bad then I will o to a doctor and get a lot of rest. Doctor usually will give me an injection and some pills. Basically, I take bills for 3 or 5 days then my clod will away. By the way, If I want to go to outside, I will wear a mask, because I do not want to spread influenza to others. I think that is politesse and importance.