Mirror

I definitely did not know what was going on with this film. Once I was lost I tried to understand the film but could not. Things that I noticed that must have a great importance to the film is that the movie flips from color to black and white and does this a couple of times throughout the film. Not sure why but I'm guessing that it has something to do with presenting two stories or something to do with two different lifestyles or something to do with two lives. I also did not understand the part which was not in the woods, it was somewhere that prints papers or something. That whole scene lost me.
Also at different scenes I noticed that a huge gust of wind would appear and did not know why they did this but I'm guessing it was not accidental. In one of the earlier scenes when the doctor came and visited the woman (the main character, I forget her name) I noticed when he started walking away that a huge gust of wind suddenly appeared. It made me think that the doctor was going to turn around and go back to the lady but didn't. I also remembered a couple of times during the film there was a lot of wind so I would like to know why that might be and if that has any importance.