Sometimes when i get some pvc's or pacs i get anxious but i know that isn't dangerous and i try to calm down, also when i get bigemeny i try to calm down because i heard that it is benign. I also get sinus tach when i get anxious, my heart rate wil go up to 150/160 then, is this dangerous ? But when it is important to go to the ER ? I'm by the way 19 years old male with a normal heart.