HI,I have this small lump under Adam's Apple,sometimes i do not feel anything sometimes it feels,iv been having my tongue white,There are days i barely sleep I do not know if it is because anxiety or stress I Had this lump around four weeks already,I am 22 years old,male sometimes this lump is bothersome ,i feel tightness on my neck.Could it be infection or something else?By the way the first and second week i had fever and some flu but after third week i had no issues but this lump.