Hi.. Welcome to HEALTHCARE MAGIC.. I have gone through your query and can understand your concern.. As per your complain it seems that you have got a viral infection leading to loss of voice known as Laryngitis along with coughing mucous.. I would suggest you to consult an Otolaryngologist and get evaluated and a he can do a laryngoscopy and sputum culture to rule out the exact cause of problem and treat you accordingly.. You can be advised to take a course of antibiotics like Augmentin or Azithromycin, anti-inflammatory painkiller like Ibuprofen, mucolytics like Ambroxol, anti allergics like Benadryl.. Do warm saline gargles, steam inhalations and use a humidifier in your room.. You can also sip on warm water throughout the day as it will help in relieving throat and improve voice.. Suck throat lozenges and chew vitamin C pellets.. Do not strain your vocal cords by trying to speak with applying force.. Hope this information helps.. Thanks and regards. Dr.Honey Nandwani Arora.