<s>[INST] Hi, I have a pinching pain in the right side of my chest which started yesterday morning and has now spread across my chest into my left shoulder, it comes on and off sometimes every few minutes and sometimes will not happen for an hour or so, its quite painful when it comes taking my breath away for a second, I have not hurt myself doing any exercise, however i did take a small amount of cocaine at the weekend. Do you have any idea what it may be? [/INST] Thanks for your question on Chat Doctor. I can understand your situation and problem. By your history and description, possibility of musculoskeletal pain is more. But better to rule out lung related causes for your pain. So get done chest x-ray. If chest x-ray is normal than no need to worry about lung causes. And your pain is mostly due to musculoskeletal cause. So avoid heavyweight lifting and strenuous exercise. Avoid movements causing pain. Avoid bad postures in sleep. Take painkiller and muscle relaxant Chat Doctor.  Warm water pad application on affected area is also helpful in such cases. And avoid contain intake as it is not good for health. So don't worry, you will be alright. Hope I have solved your query. Wish you good health. Thanks. </s>