This reminds me of something that "takes on a life of it's own".

I found this at Dreammoods:
Birth

To dream of giving birth or see someone else giving birth, suggests that you are giving birth to a new idea or project. It also represents a new attitude, fresh beginnings or a major event. Alternatively, the dream may be calling attention to your inner child and the potential for you to grow.

This is from Aisling:

To dream of you or someone else giving birth means a new aspect of yourself is about to be born. It is your responsibility to develop this side of yourself. This is always a positive dream, as to allow a new aspect of yourself to flourish you must let go of whatever kept it suppressed. This dream usually comes after doing some developmental work on yourself.