Andres: Already studies are suggesting that our gut is a 'second brain'....sending many signals to our brains, and likely being a main source of emotions.
Our 'guts' aren't really a second brain at all. Gut reactions are the language of the right side of our brains - the side that has no language other than physical responses.
Our brain operates on two hemispheres and it is the left side of our brains that is responsible for language production. The right side of our brains has no language ability - it can only trigger physical reactions in response to pattern recognition. When we have that intuition that seems to come from our gut, it is really only the ride side of our brains trying to communicate that it has recognized something that we need to be aware of.
So, our guts don't have much to do with emotion - they are just the receptors of right brain communication. Unfortunately, the left side of the brain is a bit arrogant - it has been told, by the culture that has influenced its development, that it is the best, brightest, and most accurate. So...we usually ignore those gut feelings (right brain commmunication) or attribute them to the occult or some other easily put down phenomena like mental illness etc