It sounds like Temporal Lobe Epilepsy (it's not the grand mal seizures most people think of when they think of Epilepsy)
Is it kind of like a rising feeling in your stomach? Is it ever accompanied by a sense of deja vu?
TLE can cause all of the things you describe, and would only last a minute or 2. As long as they're not affecting your life negatively it's nothing to be too concerned about. I did hear of one woman who had them to the point where she wrecked her car from having one while driving.
I used to get these as a kid, but I was never diagnosed because I didn't have the vocabulary to explain what was going on. It wasn't until I learned about it later that I retroactively diagnosed myself. In my case, I grew out of it (which kind of makes me sad; they were kind of cool). It is suspected that Joan of Arc and a lot of spiritual leaders of the past have had undiagnosed TLE. Hope this helped.