ive mentioned it twice to too different doctors in the past, but both have said its only a cysist, or just fatty tissue, but somtimes i feel realy sick and run down and the lump get a bit bigger and quite sore when i touch it, i would say this happens every two months, ive had my blood taken for thyroid tests in the past but that was to do with bowl and stomach problems, and they came back normal, i just know theres somthing not right, can i ask for any tests to be done which the doctors havent done before, or can only doctors do what they feel is right,