Hello, I'm 31 years old, and for the past few years have had a hard painless pea sized lump in the back of my neck, I did get it checked awhile ago, the doctor did x-rays on my neck and said all was fine, so I figured it was ok and left it at that, but I my husband happened across it recently and I felt it and noticed it has gotten bigger and I'm also having some symptoms that are starting to worry me, (chronic low grade fevers 99.7-100, can't do anything slightly physical without exhaustion and shortness of breath, itchiness that drives me nuts at night, and pains in my arms and legs sort of like a toothachy feeling) Should I get this thing checked again or watch and see if it gets any larger?