I injured my wrist and something made a snap sound. now there is (i think) a joint sticking out. when i move my wrist something pops. hurts. advice?

Needs medical eval.: Based on your description, you need to be evaluated immediately by either your primary care doc, an orthopedists or an er/urgent care center. It may be something minor but needs evaluation by a doc and at least an xray. In the meantime, ice, elevate, and immobilize with splint, etc.

See a doctor: You may have broken a bone, tore a ligament or dislocated a bone. This may need an x-ray and could require surgery.