Well, it turns out that there are a handful of surprising reasons you’re congested, some of which are more obvious than others. If that doesn't help enough, ask your doctor about using a decongestant or a nasal spray containing an antihistamine or corticosteroid. Running a humidifier, drinking plenty of fluids, and using a saline nasal spray can all help. Nasal polypsAnother reason for a “cold” that never ends: nasal polyps, which are small, soft growths in the nose or sinuses, according to the National Library of Medicine (NLM). You might be better off using a nasal steroid spray, which can help shrink polyps and relieve your symptoms.