It could do, IMO - caffeine is a great stimulant - but it does sound like a form of migraine, definitely. Until my niece had stroke-like symptoms with hers (and she's the same age as you) I had no idea migraine could cause such physical effects. Hopefully your employer realised you were ill? - so you could take time out to go to the docs today? - it's worth going, you might be able to be prescribed something to take if you feel it coming on again, to stop it escalating. I'd go to the docs if I were you, just for your own peace of mind.