2 cm kidney stone. what do i do?

See a urologist: Stone is too big to pass sponaneousy & too large for shockwave lithotripsy (eswl). Urologic stone expert will likely advise percutaneos nephro-lithopaxyy (pcnl). This involves temporary placement of a percutaneous neprostomy tube, through which a nephroscope is passed & stone is proken up by laser or tithoclst. Performed under general anesthesia or sedation. Open surgery should be avoided.