hi venik..i know exactly what you mean..i go through pretty much the same symptoms myself..sharp pains in my arms,chest,tight neck,thirsty,wanting to go to the loo at the same time being frightened that i might collapse in the loo..i get chills and my teeth start chattering,dizziness,and my acidity gets so bad that i,m continously feeling nausea..what helps me is challenging the anxious thoughts that mayb this time its my heart..i have a print out from the panic programme and i sit and answer all the questions on paper each time i get scared that this time i,ll discover i have a heart problem...hope this helped a bit..we do understand what your feeling..luv sanju