What you're describing sounds very intuition based. As commonly as it is said, and as much as people are sick of hearing it, I generally suggest meditation as a means of exploring intuition (and most other things).
Why? It allows you to become more in tune with what you are feeling and why. Over time, after practice, you will be able to examine your thoughts and feelings as they happen and think to yourself "Is this a natural reaction to this moment, or is this a gut feeling I should be curious about?" With such understanding, time, and experience, and you will develop a greater knowledge of how yourself, and the world around you, thus being able to aptly recognize when your intuition is ringing alarm bells for you.
Many traditions have other methods for understanding this, but in the long run it all boils down to the same thing. You're someone who is just quite sensitive to your environment, and observant on a subconscious level. When you are able to see these things on a conscious level, that's when you can understand and react appropriately.