Marge
I don't mean to alarm you but you really should see a doctor. You are obviously computer savy, so check the net for Atrial Fibrillation or rapid heartbeat. I take medicine to control Atrial Fibrillation which can last anywhere from one to several hours. Each time I have been admitted to the hospital in order to control it. I cannot drink wine or any alcholic beverage because it will cause me to have a rapid heartbeat. Your problem may be nothing or only stress related but you should not fool around with your health. Atrial Fibrillation can cause blood clots that could lead to a stroke if not properly treated.