I know that Y!A is not a reliable source for medical attention, but I am wondering if anyone else experiences this? I experience heart arithmia (sp?) a couple times a month but always related it to stress. My grandfather has a bad heart (several massive heart attacks and bypasses) and my mother has a leaky heart valve. I am starting to wonder if heart problems run in the family. Every now and then I will go to take a deep breath and a very sharp shooting pain will go through my heart. It catches my breath and stays mildly for the next couple breaths. Is this another thing related to stress or should I think about seeing a doctor? I am currently 20 wks. pregnant, so I am not sure if this makes things worse.