Pinching kind of chest pain. Sir/ madam!

Good evening sir / madam, actually am having sometimes pinching kind of chest pain which will be like pulling inside my chest area until neck again the pain will subside within few minutes . Sometime it's also radiating until shoulder and armpit area , the pain comes left sided only sometimes behind the breast bone and below the breast area . I have done four ECG until recent update everything came normal , in march i had done echo, troponin, chest xray , everything came normal but pain is coming and going from past 3 months .i dont habe shortness of breathe ..only sweating on palms with Heart Rate of 130 above sometimes, and i feel twitching inside chest area , legs and arms , randomly twitching. Bp also normal 110/90 what is the main cause of this pls say me sir/ madam thank you