I was in a car accident couple months ago and injured my elbow. now every time i put any pressure on it there is a lot of pain. what's wrong?

Elbow pain : It depends on the mechanism of injury, what side you were on, where you had trauma on your elbow. You should go to an orthopaedic surgeon for a physical exam. Be able to point to your pain with one finger, know the exact day it happened. You may or may not need x-rays but you should get an exam. How's your neck? Good luck.

Fractured Olecranon: With non-union possible Ulnar Nerve intrapment. See ortho surgeon to correct this