I am 28 years old and I have been taking pain meds for about 10 years for spinal damage located at my T6 Vertibra, about 5 years ago I started having random bouts of tachycardia , for which I was perscribed Metroprolol. After a while of taking the Metroprolol I stopped having tachycardia and started having more bradycardia , where my heart rate would be in the low 50 s, so I only took the metroprolol when I had the tachycardia events. Now about 2 months ago I started having something new, I will have strange spasms in the center of my chest above my heart, Ive happened to be checking my heart rate with this happened and I can feel an appearent skip in my heart beat when it does. I will also feel a twinge in my throat , and sometimes I will feel like I have to cough; it will also be accompanied by an all around cruddy feeling, is the only way I can explain it. I also get chest pains centered on my left side, but not severe, I always used to attribute these to my spinal issues, but now Im not too sure.