<s>[INST] 12 months back I had a tearing feeling in my upper chest once the previous night I had masturbated with squizeeing my base of the penis sine then whenever I am in upright position I get a feeling as if my nerve is been pulled in the upper chest I also a tingling feeling in my left ear and left shoulder arch and as soon as I lie down the pressure gets realeased [/INST] Thanks for your question on Chat Doctor. I can understand your situation and problem. In my opinion you are having mostly muscular pain. But since you had left sided chest pain with left arm pain, we should rule out cardiac cause first. So get done ECG and 2d echo to rule out cardiac cause. If both are normal, then no need to worry much for cardiac cause. Your pain is mostly musculoskeletal in nature. So avoid strenuous exercise. Avoid heavyweight lifting. Avoid bad postures in sleep. Avoid movements causing pain. Start painkiller and muscle relaxant. Apply warm water pad on affected site.Don't worry, you will be alright. </s>