Retarded Body

Yesterday, a marked change or a reaction i notice on my body. While drinking mocha frappucino at starbucks, which was about half consumed, i can feel the blood streams all over my body beating in rhythm. What made me worry was that it was increasing in speed, while i was sitting still drinking non-alcoholic drink. I lost focus, my smell sense seem to have left me, i couldnt smell that strong fragrant of coffee beans, i wasnt able to taste the coffee quite well in fact. But i can hear voices much more effectively, its as if all my senses was pushed to hearing.

Footsteps were louder, laughs across the room was more audible.

I hear things that i don't know if i should hear.
Eavesdropping. Am i violating privacy?
Should i apologize?
Walk across the room to random unknown people and tell them sorry that i overheard their conversation and look at their most likely puzzled face.

I think my body is getting retarded. Help.