Pain along left side of body chest pain.

Hi, Well my problem is that whenever I get stressed or even lightly worried I feel my entire left part of body feeling numb, tight and it mildly hurts randomly like my left hand , hip ,knees or stiffening of neck nerves sometimes I cannot point out any specific part it's like i feel discomfort all over my left part of body while the right side looks absolutely ok.I know it's because of accumulation of gas and if I press any part along left side of my body I star burping.what can I do to overcome this like any change of food habit or something like practising yoga or just some pills.Well pills don't really give a permanent remedy as long as Iam off the mood ;stressed worried ;even over something simple this problem starts nd once I it became so severe that my chest started h