Dream of children

I entered a busy roundabout and my car went under a huge trucks trailer, i was following his route to try and keep the trailer wheels from hitting my car, but the wheels were coming closer all the time i just knew i was going to die my thoughts were with my mum, not my husband or my children but my mum i was imagining her recieving the news ans planning my funeral. I had not been talking or thinking about trucks,trailers dying, roundabouts. so cannott think where this has come from.