Pain=7 cheek swelling. lump mouth bottom gum line.freely moving white pustule pops, bleeds turns in2 red pustule. disappears&reappears always samespot?

Dental abscess?: If a lump is in the gums (not on the inside nor the outside of the cheeks), and it swells with pus and then breaks open, it can be a tooth abscess. An abscess from the root of a tooth can spread to the gum surface and appear as a pustule. A dentist can evaluate to see if that is the problem.

Tooth Infection: What you describe sounds exactly like the signs and symptoms associated with an abscessed tooth or teeth. You should see a dentist asap to be examined.

Fistula: What you describe are the classical symptoms of what we call a fistula. A fistula is a channel emanating pus from an infection site. It typically comes and goes as pus builds up and then gets released. You need to be on antibiotics immediately to prevent the spread of the infection, as well as definitive treatment to remove the cause of the infection. See a dentist asap!