i'm a 40 yr old male 5'9 187 and fairly active. i've worked in a high pressure sales job for 17 yrs now. through the yrs i have noticed a fluttering from time to time that last for a couple of seconds and takes my breath a little. it may be months or or a few weeks between episodes. a couple weeks ago i got the fluttering but it continued on for a few hrs but my heart rate was around 80 bpm. now a couple days ago it came back lasting over 12 hrs. when i check my pulse it is 60's - 80's and i have no pain nor i'm lightheaded with it. when i wake in the mornings it doesn't seem present until i think to check it or get going during the day. it showed back up yesterday and i went on to my family dr and he performed an ekg which was normal. he drew blood to check my thyroid, cholest, ect....i drink very little caffeine. i did take an all night fishing trip a couple weeks back and i seem to still be trying to recover from it. also i have been going through a lot of job related stress causing financial problems i have'nt been used to. i have a dull headache that comes and goes but my blood pressure is running from 115/78 to 130/84. now the worry of health problems is causing anxiety preety badly. any chance this type of condition be considered atrial fibrillation? my heart isn't racing away. by the way i have a history of mild asthma that i control with albuterol and advair. i also had a heart murmur when i was young and had a yrly checkup with cardiologist to age 18. never had restrictions meds or surgeries for it. thanks.