I am 15 years old and i have a lump in the right side of my neck, i went to a doctor various months ago and he said it was just a lypthnode but i still worried as my nan had, had throat cancer. it has been here several months and has now started to cause me abit of pain and it feels bruised. It is quite big and i don't know exactly if it is a lypthnode or not, i am scared incase it is cancer should i see my doctor again?