Based on your history and USG reports, your left parotid gland(which produces saliva), appears to be involved
Firstly please visit an ENT surgeon for proper examination of the gland and related structure, also go for FNAC after that (tiny sample of your gland will be taken for microscopic examination via a needle)
Next Steps
Consult an ENT surgeon and go for an FNAC procedure after that
Health Tips
Please dont delay the consultation because of Homeopathic medicine
They are great for some diseases but will not work in your case