I have a lump on the left side of my neck, just above the shoulder. It's tender to the touch, and is about the size of half a golf ball. I assume it's just a cyst or something, but what's worrying me is that for the last year I've have had chronic, yet weak kidney, lung, testicle and abdominal pain. It doesn't really help that I'm overweight, but yeah, just letting you know. I've had an increase in small moles on my neck, including one where the lump is located. I'm only twenty, so what are the chances that it's cancer?. P.s. I don't have insurance and im unemployed, so I can't just get up and go to the doctor. Also, just behind my ear is a lump that is also tender, but much smaller. Each appeared only days ago.