I have had four healthy pregnancies, and two miscarriages. I have also had literally DOZENS of dreams portraying my fears that something was wrong with the baby. They ranged from the bizarre (giving birth to a ferret!) to really scary, and realistic (bleeding heavily and passing a baby). It's very normal, and you shouldn't worry that it is a premonition. This is a huge ordeal you are experiencing.. it's on your mind all of the time! You are bound to be going over and over things in your head.. and at night our brains take all this info and try to sort it out. It manifests in our dreams. Just take care of yourself.. be healthy, and chances are great that your baby will be too!!!