Hi welcome to health care magic forum,
Change of voice or hoarseness
may be due to vocal cord pathology. It could be benign or malignant lesion.
But as you complain hoarseness from left or right side of throat is unusual . Lump under the ear may or may not associated with hoarseness of voice.
In my opinion You can take a absolute voice rest and take antireflux agent with a broad spectrum antibiotic for 5 days.
If no relief than you must see an ENT specialist
for an indirect laryngeal examination and followed by voice endoscopy
for a detailed laryngeal examination.