Sorry to hear you are in pain. A swollen tongue is unusual - I've never heard of it happening before... there is an amino acid that helps sores in the mouth the heal, but I can't recall which one at the moment.
Maybe MSM (NOT Miracle-Mineral-Supplement ) capsules would help the pain and inflamation. MSM has no side effects and is a great supplement to take as it does many good things for the body.
An cleansing enema might help - it's suprising how many things that affects - with a coffee retention enema as follow up to release toxins from the liver.
Activated Charcoal capsules are good to absorb toxins...