Have a sharp pain right side of chest when leaning back . no pain when not moving . what could it be im a male ?

CHEST PAIN: Sounds like musculoskeletal chest wall pain. If you are a healthy young man with no known history of cardiac or lung issues, I would not be concerned. Should resolve within the next several days, but if not, or if the symptoms worsen, follow up with your doctor or consider a trip to emergency. You may consider an anti-inflammatory medication.