Momentary brain "twitch" and I think vertigo too

[Tibbar22]

Today seated at work on the computer, I had for a split second a moment where like a pulse came into my brain causing me to jerk my head a few inches while at the same time my balance and/or dizziness seemed to be with me for a split second. My head felt a little funny the rest of the day.

I am 63 years old of normal weight. In good health except I take 15 mg Lisinopril which controls my BP quite well. And I take 100 mg x 2 of Felecainide, 50 mg of Metoprolol, and 3.5 mg of Warafin since July 2009  (which pretty much has stopped the Afib so far) for my non-persistent atrial Fibrilation which started in Jan 2008..  

This all started when I fainted once in early 2008 after having afib. At that time Dr put a pacemaker in because my normal resting heart rate was 49-50.

Could I have had a stroke today.....Only symtoms I described above. Should I have gone to ER. What tests would they run>    THANKS