When you dream you are pregnant it normally means that the is a turning point in your life which means that a project or something your working hard on is developing. It may appear in a form of a pregnancy because it is very important or personal to you, and may be you are not yet ready to reveal what it is.Dreaming that you are pregnant by a best friend/ close friend means that you may internally have feeling for this person. The dream my come in a form of a pregnancy to symbolise a close and sacred connection between you and your best friend/ close friend. This person is someone you feel very close to, it could also mean that you are slowly recognising the connection between you both. If the pregnancy is happy it may means if you end up together you may have a long and fruitful relationship.
Usually dreams are the opposite of what they are displaying. But having a baby are dreaming of pregnancy often means death. This doesnt mean your best friend is going to die but could be the prediction of someone close to you.