For the past 2 days I have been getting really sharp pain down my left arm and little tingles in my fingers. Earlier this year or late last year I had all the heart tests done including a stress test and stuff injected into my heart and ex rays done, everything was clear although they did find that I do have an irregular heartbeat, but my doctor put that down to my anxiety. I am currently on antidepressants (pristiq 50mg per day). But I don't understand why I am getting this sharp pain. Any advice please?