I have been experiencing this exact same thing and no one has been able to tell me what it is. When I was pregnant I would experience heart racing and my OB had me wear a holter monitor and get an EKG which both showed my hear to be normal. She said that some people get pregnancy induced tachycardia due to the strain pregnancy has on your body, but she said it was nothing to worry about. It went away after I had my son, but now I am experiencing a weird flutter in my heart/lung area, almost like my heart is out of sync and it's accompanied by a quivery/hazy feeling at the base of my neck/throat that forces me to have a bronchial sounding cough. As soon as the weird feeling goes away, so does the cough! What can this be?
kindredspirit -If you find anything out from your Dr., can you let me know? Thanks!