Second dream about two spiders wrestling...?

This is the second dream I've had in a week about two spiders wrestling I find it rather curious as I've never dreamed about spiders before. Both dreams seemed to be set-ups for the spider imagery as well. The first I was doing something rather mundane in my bedroom when I tripped, fell on the floor and my vision was focused on two very large, spindly, and heavily segmented spiders wrestling. The second I was talking to someone in my hallway when again I ended up on the floor and saw the same spiders (except perhaps more hairy) wrestling. Usually I don't make much of dreams but this image feels rather portentous. Any thoughts on the meaning?