Have had headache, coughing, sorethroat & other symptoms for around 2 weeks?

Common ... cold? Upper Respiratory Tract Infections are very common and typically viral and self limiting. See http://patient.info/health/common-cold-and-other-upper-respiratory-tract-infections for more information. If symptoms are worsening after 2 weeks, or you develop fever, breathlessness, or productive cough see your GP for review.