Do you ever randomly remember scenes from your dreams?

The dreams I remember for a long time are always really horrible. Once I dreamed my children had ran towards an old stone bridge and were climbing on it to look over. Under the bridge was very deep, fast flowing, muddy flood water like you might see in the aftermath of a storm and I was literally terrified for their safety. Another time I dreamed I had a massive gaping hole in my breast. When I woke up I actually had to look at my boob to convince myself it was normal. I don't know what the purpose of these dreams are but it's horrible when it's like that.