Hi, I am a 33/F. with weight about 126 pounds and height about 5feet 2 inches. I recently developed this irregular heart beat which has gotten worse lately. I am always very tired and fatigued and always want to sleep, however I cannot fall asleep immediately. I noticed the tiredness a year ago and did blood sugar and thyroid tests which came back normal. But i didnt take any medications. I am usually a very anxious person and get startled easily. This past two months I noticed new symptoms. My heart suddenly beats so slowly and strongly and I counted most of the time. It ranges from 45-50bpm. I felt unusal congestion around my chest and tired all of a sudden and kind of short of breath. But after 5-10mins the symptoms dissaperared and I felt like nothing happened and heart rate became 80-90bpm. I kept a chart and it became frequent recently. I feel like my heart would suddenly stop beating. It has made me unable to go out alone and work. My heart beats so strongly that I can feel my body moving along with the beat. I can feel my pulse everywhere and most specific in my left ear, which is driving me crazy. Its a loud thumping sound. I also developed this tingly feeling in the middle of my left chest and instantly started coughing. I have no fever as I measured but I am constantly cold and gets chills. I sometimes gets chest pain but havent lost consciousness or anything. I am really worried about these symptoms. please suggest. Thank you.