Hi
If you are experiencing pain, visit your dentist. He might take an Xray to confirm the extent of the cavity.

Anita, Firstly thanks for the detailed description. Although I could not find photo attachments. Yes, Homeopathically we can heal the ulcer & tendency to repetitive ulcers. At my clinic you can come with his reports, with prior appointments.
Skin grafting falls under a surgeon's work zone. I can treat him with medicines.

Start antibiotic tab.Advent 625 mg twice a day and tab.Chymoral plus twice a day with tab.Rantac 150 mg twice a day (empty stomach) for 1 week.
Clean that area with Betadine and apply neosporin/T-bact ointment and remove if u have worn any ear ring in that ear.

This could be due to erupting tooth or because of a deep cavity in the same . Please get a proper check up done and avoid self medication.

Your problem is sensitivity which is leading to pain. Get RCT in affected teeth and your will be ok.

to avoid medicines in future U need to get rid of the cause of ur prob. visit a dentist ASAP, get x ray done. if the prob with ur wisdom tooth cannot b solved by dentist with medicines, it is better to get it removed. sooner the better. avoid self medications.

kindly visit the dentist to know the exact cause of tooth pain followed by its treatment. Medicine will get you relief for few hours only if infection lies on decay.

It might be a tooth decay. Visit to a dentist for check up.
Temporarily you can have any pain killer.