It's erupting pain associated with the erupting wisdom tooth.
You can use Rexidine M Forte gel 3-4 times daily for 7days only to be applied locally to that area only.
If still not working, then a radiographic investigations of the teeth in question will require.
Next Steps
in case pain worsens , you can take painkiller like paracetamol .
Health Tips
rinse with lukewarm salt water after every meals to maintain oral hygiene & for soothing effect. also keep that area clean so as avoid future problems.