The nasal mucus starts out as clear watery mucus and becomes thicker after 2-3 days. If it appears sticky and yellowish, it proves a combined bacterial infection. You can take some oral penicillins, first-generation cephalosporins, macrolides or quinolones for antibacterial treatment according to the local epidemiology and the empirical medication of the local hospital. At the same time, attention should be paid to checking the blood to see if there is a combination of elevated white blood cells, which will be more helpful in the selection of drugs. Symptomatic treatment should be carried out, drink more water and pay attention to rest. If there are obvious symptoms of nasal congestion, you can treat with some pseudoephedrine to reduce the congestion of the nose. At the same time, local nasal drops can be used, and if necessary, some antipyretic and analgesic drugs can be added for further treatment.