Hi,I am 17 years old and I have heart palps 24/7 and its ruining my life,I got it about two months ago and I think it's of that cough syrup,I smoked to before it happened then stopped when I got the palps,I get shortness of breath,lightheadiness,chest pain,back pain and a lot of my vains twitch just on the right side of my body like on my eye,elbow and foot.My father has a heart disease,but the doctors said I'm too young to have any heart problems now and said everything fine,please help I am so tired of this.