I am a 37 year old woman and once in awhile I my heart will be hard. It kind of causes me to catch my breath. Today it just did it and I felt a warm almost tingling sensation go down my left arm and immeadiately  my palms got sweaty. Is this cause for concern? I have a heart murmur all my life but an echo cardiogram shows I am fine and I have had normal readings on two EKGs and a chest x-ray that show nothing. Should I be concerned?
If you are an active healthy woman, who do not smoke, it might be an isolated event and just forget about it.  However, two things I will suggest is.  1) treadmill test for making sure your heart is healthy 2)do discuss with your doctor about cervical spondylitis as the symptoms you describe commonly occurs in that condition.  A MRI cervical spine will be the investigation of choice to rule that out.  Regards Chat Doctor.