Was hit on the left side posterior rib cage while playing sports. feels like a mild pneumothorax? i can walk and do daily activities but my overall condition has become weakened due to discomfort on lower lobe of left lung. will this heal on its own?

If you getting better, you may give it time. It is unlikely that you have or had pneumothorax. Warm compresses may in relaxing the muscles. Start exercising as tolerated to improve your muscle strength and flexibility. Wish you good health!

Watch for signs of shortness of breath and.chest pain. A chest radiograph may be considered if you have respiratory symptoms, moderate pain, but most likely there is soft tissue injury. Please see your PCP if not improving.