Hi Dear, Welcome to HCM. Understanding your concern. As per your query you have cold,headache and sore throat which could be due to bacterial or viral infection due to infection of upper respiratory tract due to poor compromised immunity of body. Need not to worry about it. You can take medicines to relieve cough and cold symptoms like Antibiotics like Levofloxacin or Erythromycin, decongestant like Pseudoephadrine, mucolytics like Bromohexine, steam inhalation, decongestant nasal spray and do warm saline gargles. If fever increases do tepid sponging as well with cold water. Use mist humidifiers in room. Visit ENT specialist once if symptoms keeps on persisting. You should keep yourself hydrated always. Take healthy diet . Avoid taking spicy and sharp food. You should go for steam inhalation to relieve the congestion. Hope your concern has been resolved. Get Well Soon. Best Wishes, Dr. Harry Maheshwari