For the past couple of days I have been having very bad palpitations (skipped heart beats). It usually occurs in the afternoon/evening after I have done my house chores, going for a small walk, or eating. I notcied it happens a lot after exercising (which I don't do very often). I am 31 years old, female, do smoke cigarettes, no drugs or alcohol. I've been to the ER several times for this and they never find anything wrong. I don't have regular health insurance so I can't see a family doctor. I don't know what else to do. Any advice?