Hi, I just noticed a lump this morning behind my left ear, near my hairline. I've noticed a different lump in the past behind my ear, which i believe is a lymph node, and that's still there, but this is new. This lump is near the hairline and is very painful, even without touching it. It is not red and does not itch. It appears under the skin and seems to be getting slightly larger and more painful as the day goes on. Should I be worried? Please help!