The Thing less talked about...

Is it normal for me to have visions of a past life, that can interfere with my emotions, to such a degree, that I can put two totally different things together, and they will cause emotional effects? I remember passing by an old barn, for example, on my way to a town, and I got what was like a flashback, an emotional response to the barn, and I became so sad, that it's indescribable. Someone ought to lend me some answers...