Hello Dear
Thanks for your query, I will be most happy if I could help you out so no need to worry much.
Gone through your query in detail.
Most probably the lump of pus which you have noticed is an abscess. It may or may not be associated with pain. It may be due to few reasons-
- Decay and Infection in the tooth next to your wisdom tooth(i.e. presently
last tooth in that quadrant). I think this should be the cause of your
problem.
- It may be due to infection in any root residue of the wisdom tooth left at
the time of extraction.
- It may be due to any underlying infection in the jaw bone.(not a very
common cause)

• I will advice you to get an appointment with a dentist as early as possible so that actual diagnosis can be made on the basis of thorough clinical and radiological examination and start the needful treatment can be started.(Procedure+Medication).

• Meanwhile I am advising few things that will provide some symptomatic relief.
- Do warm water saline gargle 4-5 times a day.
- Do not apply any type of pressure or hot packs on the affected side,
Instead you can use a cold pack.
- Try not to sleep from the affected side for few days.
- Apply topical gel like Metrogyl-Dg Forte or Rexidine-M gel (commonly
chlorhexidine and metronidazole combination) thrice daily.

Hope this will help you. If there is any more query or question regarding this in your mind, you are welcome to ask me any time.


Take Care

Regards