I had a first last night. First of all, after having had a meal I was in the process of trying to extract a bit of meat from between my teeth with a tooth pick when I had that 'eptopic' feeling in my chest again. This time it felt persistent and I felt like AF had got me again because it was going on for about 15 seconds. I reverted to my deep breathing, and for the 1st time for me, I went back into NSR. However, I still felt vulnerable and so continued my deep breathing. My question is, I was shivering for quite a while and eventually went to bed where after about half an hour I felt warm again and things returned to normal. It's the first time I've experienced shivering while fighting off a possible AF episode while in a various precarious NSR. Is this something anybody else has experienced?