Mine comes and goes, I'm seeing Dr cochran in mobile, he says that I have afib but it isn't regular enough to really worry about and told me that it normally takes at least 48 hrs in afib in for clots to form.. He prescribed me some medicine to take when it happens, I haven't tried it yet because the last episode I had only lasted a little while. It just scares the crap out of me when it happens and is very unsettleling.. I have adjusted my diet some and slacked up on the beer and so far I can tell a difference.