Diagnosis from GP yesterday. Sunday visit to A and E showed bloods,thyroid and ECG as normal. Condition had stopped when I was examined.GP felt my pulse was racing has recommended blood thinners. However, if it is stressed related how can you tell if you are taking meds and symptoms go away. If it isn't, how do you know what is causing the condition?
I'm overwhelmed with it all and totally exhausted.
It's difficult to comment with so little information. Matters of the heart definitely provoke anxiety and it's a bit circular and not helpful. There is an initiative to fit a device called an implanted loop recorder ILR which is an ECG recorder running 24/7/365 and sends reports to Cardiology. It will pick up any issues.
My ILR was fitted following a stroke with no obvious cause. It picked up Paroxysmal Afib which prompted a change in medication.
It was left in, they work for around 5 years, and when I collapsed earlier this year it showed the cause, a ventricular tachycardia, unfortunately after the event!
Note my circumstances are a combination of relatively rare events so I'm not a reason for you to worry! But they show the use of an ILR in diagnostics.
Your GP needs to make an assessment that merits referral to Cardiology. It won't happen at A&E. I suggest you need another conversation with your GP to fully understand how they see your symptoms.
Potential AF? Bisoprolol for management?
AF and having surgery 
Newly diagnosed with AF
ongoing AF not responding to drug
Af and ejection fraction 42%
