<s>[INST] Hlo I am 21 year old and I am suffering from a pain that is on my left side of my chest . When I first got that pain I feel like burning like sensation on my left side of chest and also a pain that sometimes was on right side of chest (little), and also the pain on the back, one day I feel that my left arm was also involved then I concerned a doctor he gave me some medicine and I feel that I am recovering but after few days I feel that when I strech my neck i feel the same pain on my left side of chest and in the arm pit I searched on net what causes this type of pain and that came to many results and the most dangerous result which was also the cause of chest pain was cancer now I thought all the day about this and pray to god that it should not be cancer so I am in tension I also had ECG whicChatDoctore normal so plz tell me is it cancer or something [/INST] Thanks for your question on Chat Doctor. I can understand your concern. No need to worry about cancer as cancer is extremely uncommon at your age of 21 years. Your ECG is also normal, so no need to worry about cardiac disease as well. In my opinion, you are mostly having stress and anxiety related symptoms. So better to consult psychiatrist and get done counseling sessions. Try to identify stressor in your life and start working on its solution. You may need anxiolytic Chat Doctor.  So avoid stress and tension, be relaxed and calm. You are not having cancer or cardiac diseases. Don't worry, you will be alright. Hope I have solved your query. Wish you good health. Thanks. </s>