Hi. Welcome to Healthcaremagic. I read your query. The bump you mentioned on the gums corelate with abscess in your gum and the white point is the point of pus discharge that has formed. Check if corresponding tooth have cavity, which can be even on inner surface of teeth or in between two teeth. Or this could be due to trauma like hitting corresponding teeth or biting something hard from those teeth suddenly. You need to visit a dentist and get an x-ray done for definite diagnosis. It may require RCT of tooth. Do warm saline rinses. Take antibiotics and painkiller prescribed by dentist after check up. permanent treatment is to get drainage of pus and clearing infection by a dentist. Hope the answer helps you. Thank you.