Dar, having bad dreams and worrying about them can make us not want to sleep I think (wake us up before we have a bad dream) and that's not good. When I use to get a run of bad dreams I'd discuss them with my therapist and "use" them, look at them as helpful so even though they were unpleasant to have, my attitude about them helped me remember they were just dreams and can't hurt me and can even help me if I let them.
I found this article too which looks good:
http://www.dreamwisdom.info/library/...emedies_dw.htm