Hi, For about 6 months now I've been struggling with anxiety. Lately, a lot of significant stresses have been going on, to the point where I'm having panic attacks at least every couple days (much more frequent than usual), and even small things are enough to start pushing me over the edge. Recently, when I start feeling overwhelmingly anxious, my breathing gets labored and my chest kind of constricts inwards; very recently causing a sharp, lingering pain in my sternum. Should I be concerned?