HI Thank for asking to HCM I really appreciate your concern, your given history is suggestive of some infection of parotid gland the viral infection is just likely weight for some days if this is viral infection then this would show the exact clinical sign and symptoms mean while this could be managed with the Tab Acetaminophen with Ibuprofen three times in day in my opinion you need to get it examine if the swelling increased, hope this information helps you, take care and have good day.