Hi.. Welcome to HEALTHCARE MAGIC.. I have gone through your query and can understand your concern.. As per your complain the symptoms of sore throat along with cold,runny nose, loss of appetite and fatigue seems to be due to viral infection or upper respiratory tract infection.. I would still suggest you to start taking a course of antibiotics like Levofloxacin or Azithromycin, anti-inflammatory painkiller like Advil, take decongestants like Pseudoephadrine and mucolytics like Ambroxol.. Antiallergics like Levocetrizine has to be taken.. Do warm saline gargles, steam inhalations and use a humidifier in your room.. Chew Vitamin C pellets and suck throat lozenges.. In case of no improvement in a week consult and Otolaryngologist and get evaluated.. Hope this information helps.. Thanks and regards. Dr.Honey Nandwani Arora..