A cold with yellow nasal discharge is in which stage of a cold?

Patient's question:

Male, 20 years old, hasn't had a cold for nearly half a year, got a cold last week

Doctor's answer:

In this case, it is likely a bacterial infection. It is recommended to actively administer anti-inflammatory drugs for infection treatment. Pay attention to drinking more water, enhancing nutrition, and exercising regularly. For a common cold, antibiotics are generally not necessary, as it usually resolves on its own within about a week. If there is a secondary infection, then symptomatic treatment is required. Pay attention to diet, avoid extremely cold and greasy foods, and take care to prevent colds.