I just got back from a walk, and on the way I stopped off in a shop that and bought myself a Dr Pepper. The can shape was a little different from how it usually is, but apart from that it seemed pretty normal. I drunk it, and it tasted pretty normal, but within ten minutes of finishing it and discarding of the can, my vision went slightly blurry and I started getting a headache. As time went on, I started feeling dizzy and flustered. That was about twenty minutes ago, and it hasn't stopped. Do you think that this could be a coincedence? Should I do anything about it?