Last Friday After working out I had this weird sensation below my left ribcage and all of sudden my heart started racing and I felt shortness of breath I felt dizzy and feint chest felt tight but no pain and I was scared out of my mind I calm my self down and it went away but those same symptoms came back at night my legs felt really weak and i felt really tired I kept getting chills and hot flashes also my left arm felt numb. I was aware of my heart beat in my arms,back, neck and stomach I checked my heart rate and it was fine Ive never felt this scared I felt like I was dying finally I calm down and fell asleep The next day I felt better most of those symptoms were gone but I was still aware of my heart beat and I felt tired and felt dizzy at one point of the day all I kept thinking about dying it was terrible On Sunday I felt even better no more dizziness but again I was aware of my heart beat and had a hard time falling asleep Anyways its been 5 days and ive gotten better but I still feel something is wrong I hate being aware of my heartbeat ,i did some search and found It might be anxiety but I also found other scary diseases just thinking about heart problems scares me im only18 and Its hard to believe its anxiety because ive only had one panic attack my whole life and thats a year ago but I also never had any heart problems or complication or High blood pressure or low I play Soccer and all of this is scaring me because Im scared to do anything that will get my heart racing , I feel fine now but I still keep thinking something is wrong also I feel at school too I will get myself checked soon this week but for now I need help on getting an idea of what this could be