I'm 15 years old (female) and have this strange small grape sized lump on the back of my neck, it's like INSIDE the neck. Ive went to the GP since I was extremely anxious. (I have no other symptoms that I know of aside from this.) They told me something along the lines of "it's a cyst and if it grows or hurts come back". This settles my anxiety for a bit, but I've recently remembered that the lump was there. And I'm not sure if it grew, and I basically forgot what the GP said.I'm really scared. I also have this kinda soft movable ish lump behind my ear, like it's literally right behind my ear. Please any advice will be appreciated