Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain it seems more like a
dental abscess in case if the tooth is decayed over which the lump is present..
It can occur due to infection reaching below the root tips of the tooth leading to pus formation..
In case of tooth is not infected other causes can be
gum infection leading to gum or
Periodontal abscess..
I would suggest you to consult an Oral Physician and get evaluated and he can do a thorough clinical evaluation and investigations like X-ray if needed..
On case of Dental Abscess either
Root Canal Treatment or extraction of tooth can help..
In case of Periodontal abscess or gum abscess Scaling, curettage and antibiotics will relieve..
As of now you can take anti-inflammatory painkillers like
Ibuprofen and apply a numbing gel over it for relief..
Do warm saline gargles..
Thanks and regards.
Dr.Honey Nandwani Arora.