Thank you for your query.
The swelling that you mention could be due
to multiple reasons. There's a possibility that a tooth may be infected and thereby causing periapical abscess
on the left side. Sometimes
involvement can be best clarified through clinical examination and xrays. I would suggest, you see a dentist
for the correct interpretation of your problem. If a tooth is causing this swelling, it can either be treated through a root canal treatment or extraction, depending on the condition. If it is not so, then it could be due to a pathology of the mandible ( lower jaw bone ).
For the symptomatic relief you can take two tabs Ketorol dt, stat, dispersed in water. This shall take care of the pain. Further antibiotics if required shall be prescribed by your dentist according to the prevailing problem.
I hope this advice is helpfull to you.
Get well soon :)
Dr. Akanksha Sharma