Hi,
Thanks for asking the query,
Lump near the gum could be due to abscess arrising form the adjacent tooth or can be due to
gingival abscess due to accumulation of
bacterial plague and calculus deep in the gum pockets, to confirm this x-ray is needed.
Drainage of the pus is required , get the
root canal treatment of the infected tooth completed.
Small bump on the gum can be excised surgically.
Go for symptomatic treatment of complete mouth scaling and polishing.
Take complete course of antibiotics and analgesics.
Maintain a good
oral hygiene use antiseptic mouthwash gargles twice daily.
Hope this helps out.
Regards.