I ve been having occasional pain and numbness in left arm and hand and underarm pain as well. Sometimes its on the right side but i feel its more on the left. I get ocasional pain on the upper back, shoulders and neck as well and chest area too. Sometimes i feel it travels to my ears and head through the neck.i have also been experiencing few seconds long pain in various part of breast and chest. This is going on since 4 days. I ve been feeling some anxiety too, is this beacuse of that? I ve recently been treated for a UTI and I ve had shoulder and neck muscle problem last year for which i was diagnosed with vitamin deficiency. I m confused and scared if its related to heart! I have also been feeling a little nauseous sometimes and bitter taste in my mouth too. I ve been fasting since four days as a religious obligation and this all started on the first a while after i kept my first fast. When i eat sometimes i feel some miscomfort in my chest! Why is this all happening?