Broke my pelvis at 16 and now im 21 with severe hip pain at times to the point where i have to limp to walk what can make the pain go away?

Follow up with ortho: You definitely need to make an appointment and follow up with an orthopedic specialist. Your symptoms could be related to your old injury, or could be from a whole new process. The only way to differentiate is to see a specialist. You do not just want to treat your pain until you have a definitive cause for your pain.

Pelvic pain: See orthopedic surgeon for good exam and imaging. Check for post traumatic arthritis, malunion, nonunion. May be a surgical candidate.