Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concern..
As per your complain the symptoms seems to be that of
Throat infection only and it can be viral in nature if strep tests has come out to be negative..
You seems to be suffering from Severe
Viral Pharyngitis along with
Laryngitis leading to loss of voice.
You need to continue taking the remedies that you are already taking and along with it you should also do steam inhalations..
You should completely avoid sour, spicy and chilled foods..
Sip on warm water throughout the day..
You should also take a short course of antibiotics like
Azithromycin to prevent secondary bacterial infection as it can worsen the condition.
Take anti-inflammatory painkiller like
Ibuprofen to relieve throat ache..
Gargling with numbing mouthwash can also relieve pain..
In case of no improvement consult an Oral Physician and get evaluated..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora..