In January of this year, I suffered a acceleration/deceleration injury involving my rt, shoulder and arm. Over the past month, my left shoulder is aching; along with this, I have a sharp pain in my mid-thoracic area, and my heart skips a beat or two when this happens. My ECG was fine, as is my cholesterol levels. Just wondering if the whiplash injury may have aggravated this condition. RN in BC