esker

When you hear hoofbeats outside your window, it's probably horses, not zebras.

Seriously, dude. At 22, your chances of having a tumor are vanishly small. Not impossible, but very rare and unlikely.

So it's not zebras. It's horses. You got kidney stones. Contact the hospital and your state or county health department to find out what they do for people with no health insurance. Stop being scared and just get going!