It is very common to experience a lingering, mild dry cough after recovering from a viral infection like COVID-19. Since you are taking A-z, Limec, and Calcimax, the safest approach is to use non-pharmacological remedies. Drinking warm fluids, using honey to soothe your throat, and inhaling steam can significantly ease the irritation. Staying well-hydrated is key. These simple steps will not interfere with your current medications. Rest assured, this cough typically resolves on its own, but please consult your doctor if it worsens, becomes painful, or persists for more than a few weeks.