I'm having some pain around my rib, just under the left breast, but only when I move a certain way. I can walk and sit fine without any pain, but it really hurts when I'm lying down or trying to get up. I've tried using pain relief sprays and balms, but there's been no change. Could this be something serious? What might be causing this pain?

A x-ray chest pa view and ecg is advised to the patient. Tab ibuprofen 400 mg sos for pain is advised to the patient.