Thanks, I am going to the doctor tomorrow.
Try this link to see if it helps. I'm not sure if it is the same thing as what you described, but if it is, it could be due to a fungal infection of the banana.
http://en.allexperts.com/q/Food-Safety-Issues-767/2010/4/bananas-1.htm
I don't know anything about banana's, but if you are still feeling bad, maybe you should get checked out.
I've toke a overdose 540mg of concerta I really ill I can't talk