Could I have cancer?

I am from a poor family. I can't remember the last time that I had health insurance. My job basically only supports the roof over my head and the other bills that I have. I am single, no family to help. I have had a marble sized lump in my neck for years. Literally over 4 years. It's COMPLETLY painless, but you can literally see it while staring at me. Never caused me issues until recently. Every once in a while, depending on how I turn my neck, I cant swallow. Something's in the way. That something being the lump in my neck. i also have a large marble sized lump in my right breast. Okay obviously...i need to go to the doctor

But here's the thing. My appetite is great..hair is thick and full. Not nauseous ever. No night sweats. I appear to be in good health. Anyone find out they had cancer with no symptoms other than painless lumps?