I was just sitting at work and all of a sudden I feel like an achy, sick pressure feeling in the middle of my chest. I thought immediately that it must be a heart attack. I haven't been feeling well lately and have felt nauseous all day. I started sweating, got dizzy and couldn't breathe well. I attributed it to anxiety, however I still having the pressure/ache in my chest. I'm having the feeling of impending doom and am about to cry...all while at work. Oh my god, what I going to to do? I feel like I need to leave but I not sure if I can. My whole body is achy also. I'm freaking out! My usually calming thoughts of reading a book or watching tv are not helping. Help...please? I don't know what to do.