"I don't feel comfortable here. I don't like the sound of this. This doesn't look right to me."

With regard to your body or surroundings, your instincts are your best early warning system. Listen to the inner voice. Listen to that gut feeling. Go to the doctor. Leave the party. Get away from these people. Quit this job. Don't open that door. Duck into that store. The world is an imperfect place. There are dangerous places and people.

Every once in a while, your instincts may be off and you may feel foolish. Err on the side of safety and your instincts may save you from danger. Give yourself time or space to consider your options. It is foolhardy to do otherwise.