We need to get a cardiac dr opinion here. GO TO A DR and get a stress test.
I was a paramedic for 7 yrs with 3 acls courses, so i have some knowledge of the heart. AFIB may, i said may, lead to stroke.. But usually in older people because of the particles that will losen need to develope over time, Right?. Caffine also causes afib and stroke. Smoking. Stress..... The most common cause of stroke is high bp which happens while using a great number of roids.
see
http://www.americanheart.org/present...dentifier=4451
http://www.uptodate.com/patients/con...y=hrt_dis/4882
Dont stop living because things may happen. Just be aware and knowledgeable... READ, LEARN.
I know i may get shit for this but everyone needs to do there own reseach and live there own lives..