I had a really disturbing dream last night. My grandfather was holding my dog and we were standing in a parking lot talking and then a van pulled up and hit my grandfather. I started crying while he was unconscious and waiting for the ambulance, and my dog ran away into the street. In my dream I stood there crying not knowing what to do, I wanted to go to the hospital with my grandfather but I had to go find my dog because I knew nobody else would. In the end I sent my sister to go with my grandfather And I started running looking for my dog. I woke up really upset and crying, all I could think is that something bad was going to happen. It was horrible. What does this mean?