Hello, It sounds to me like a compression injury to the rib cage. If the sound is persisting more I will recommend that on a safer note please take an X-ray, as rib cage is the area which isn t needed to be ignored in any way as it s one of the main areas of the human body. There might be a small hairline fracture due to the compression pressure which can be ruled out with the help of the physical examination and the x-ray. Meantime before you get this examined, use hot water fermentation and Basic deep breathing exercises to maintain the functionality of the pulmonary system. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Jay Indravadan Patel, Physical Therapist or Physiotherapist