Hello, I am new to this forum and thought I would introduce myself. I have undergone some heart tests and had an abnormal ECG with right axis deviation. A Doctor misdiagnosed me with Asthma but it's now been concluded that I do not have Asthma after several thorough tests. I have problems exercising and get symptoms such as trouble breathing, feeling faint, feeling nauseas, heart rate can go crazy (sometimes after 5 mins, sometimes could be after a much longer time but often no pattern to why this is and it can be after intense or not so intense exercise). I also suffer with coughing spasms post exercise where I have coughing fits for the rest of the night and sometimes wake up like that the next day. I have scoured the web and I feel like Afib seems to be the nearest sounding possibility as to what I may have. There are heart problems that run in both sides of my family. My heartrate has been the one thing that makes me nervous for sure. I exercise a lot and would have thought after a few years and feeling fitter (despite symptoms) that the heartrate erraticness would have settled but I regularly see my heart rate going over the recommended maximum for my age (I'm 29) and my heart rate takes time to climb down once it has sky rocketed as well. I guess maybe I should not be writing a post on here as I have not been diagnosed as such but I guess I just wondered if anyone has a similar story to mine. I've been waiting almost a year with ongoing tests and appointments. I'm due to have a 48 hour monitor fitted soon to use 1 day during exercise and 1 day without. I also have had bad experiences giving blood and have been barred from doing so (I wonder if this is heart related) as I got such bad dizziness I'm no longer allowed to donate sadly. I'm of a healthy weight and eat healthily as well so I can't quite place my finger on what else could be causing my symptoms if it is not an arrhythmia. Hopefully I will get some answers soon but reading some posts on what others suffer with exercise wise I really empathise with. Hope everyone on here is able to manage their health accordingly. If anyone feels that they can reply to my post please do. It's not so easy to try and talk to friends or family as they don't understand that there could be something behind the health issues. Thanks for reading.