Hey, I am a 41 yr old female with a past history of ovarian and uterine cancer. I just had a check up and my tsh was 0.006, and recently I found a lump as wide as my 3 fingers above my collar bone, i am really worried that my cancer has returned. See my dr in the morning for the lump, and see the new endo on the 15th. Help! worried! scared!