hi, I m 19 years old and am a non smoker. Im very thin and always have been, about 6 feet tall and about 9 stone in weight. Every year I go through a cancer scare and when i eventually rack up the courage to go to the doctors, they tell me it s nothing. Last year I thought I had Lymphoma and when exploring around i found i hard lump attached to my mandible below my tongue. it isnt very big and is not visible if i open my mouth. its below the skin of the bottom of the mouth and doesnt seem to have grown in the last year, if it has it s only a case of a few mm. the lump itself is about 1.5 cm long and immovable. Im really scared its salivary gland cancer (sublingual). I hope you can help