How long does a cold last. 23yo female and cant seem to shift my cold?

See your doctor. Colds can be a virus (rhinovirus often), allergies, vasomotor rhinitis, nasal polyps, and other conditions. Your doctor will want to know what your symptoms are and what time of the year they are worse. School teachers around little kids get lots of colds, until they build up their immunity after several years. Allergies to pets are frequently thought of as colds.