had to pull over whilst driving and get my brother to pick me up, car still where i left it. Suddenly came over very hot, tingly feet, jelly legs, felt very vacant with a racing heart. Nothing whatsoever led up to this, was very scarey. Have had turns like this in the past, variou bloods have been taken and all seems okay. Anyway went to drs three hours later and my heart was still racing, over 100 bpm but was given an ECG and thankfully all fine. Dr has given me propanalol but without any kind of real diagnosis, i am still very concerned as I can't even begin to tell you how ill these turns make me feel (this is the worse one I have had). It leaves me feeling incredibly tired and shakey. Prior to this i had a nice morning with friend absolutely nothing led to it at all, was just driving along