I was admitted to the hospital in a fib and remained that way until it reverted on its own 10 hours later. Now I have a pain in the left side of my chest made worse by physical activity or lifting my left arm. The pain is an ache that gets better with rest but does not go away.
Hireverting of a-fib sometimes releases clots which can lodge in the blood vessels or cause block better to undergo a 2d-echo to rule out for the same(left atrial clot)please do an x-ray chest and shoulder to find out for any other cause take care