It is the prevailing opinion. The dogmatic teaching is silent on most of it, except to say that Jesus was fully human as well as fully divine and that Our Lady was perpeturally virgin, and the Mother of God.
Why then would RC's be upset with the movie because it showed Mary going through birth pains? If I understand you, the RCC does not teach as dogma that Mary felt no pain. Is the RCC not correcting its congregants for some reason?