I'm 23 yrs. old. I noticed this lump, probably a size of a marble, just below my left ear a year and a half ago but it didn't bother me at first. It's not actually obvious if I face in front of a mirror. I cannot feel the lump if I'll just tap my fingers on my skin or push it softly. I still have to push my finger further to feel the lump. It's hard, fixed and painless. Now, I'm really worried because I checked it again and it's still there! I checked my right ear if there's a lump but there's none. I don't think its size changed but it is still hard, fixed and painless. I checked the inside of my mouth if something strange is growing in there but its fine. I googled it based on my description and the results in the internet are really frightening. I'm starting to panic, and feel scared and depressed. I'm not sure if it's a lymph node or something else. I tried to calm myself but everything in the internet is not comforting.