 I don't have time to teach all this, but obviously this is denoting Israel, the woman with the moon under 12 stars. She was pregnant, gave birth to a male child who was destined to rule the nations with the rod of iron. This was Israel giving birth to the Messiah. The red dragon in this case, not only is it representative of Satan, but it was also representative of Rome who was energized by Satan to destroy the male child. I'm assuming you've probably read the birth narrative sometime around December.