recurring dreams

I have been looking up on recurring dreams, seems lately for quite a few years I have these dreams off and on. They come and go all the time, I haven't been in wiccan for a while, and just now coming back to the lifestyle again for I used to practice it faithfully. But my question comes to, how do you tell if you're a true witch and do my recurring dreams have anything to do with them, for the dreams I have.....is of a witch being burned at the stake, and I can recall them each and every time exactly down to what color hair and eyes she has. In fact I've had nightmares about this as well. Do the recurring dreams mean that I could've been a witch in a past life? Thanks, dynasty100.