<s>[INST] Last night I was using wire cutters and used my body weight to push on one side and my right arm against the other. I felt a sensation of pain from my left chest area around to the back side same area. I swear it felt like a pop. Today I can not pull open a door or sneeze without feeling pain. I want it gone ;) [/INST] Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. It could be due to muscle strain in the left side of chest caused by strenuous work.You need to take rest, apply ice on the painful area, take analgesics oral or topical for pain relief,your pain will subside over few days,do not worry. Hope I have answered your query. Let me know if I can assist you further. </s>