i'm 16, and i started getting PVC symptoms about a week go, at first it only happened twice which is when i went to see the doctor, and they were big and painful. Kinda like being punched in the chest, or if you lose your breath from falling. But now it's getting more frequent and it lasts a lot longer. I feel loss of breath, like i can't breath, and the only way to stop it is if i walk. Is it normal that it changes that much? I'm really concerned because i have a lot of family medical issues. Could this be relavent?