I agree about vitamin D!! Just this week I've been craving milk. I've gone through a gallon and a half this week alone! Finally realized it's the vitamin D I'm missing. Vitamin D is linked to SAD (Seasonal Depressive Disorder).
Glad I'm a november baby too!
The vitamin D in milk is fortified in the ergacalciferol form which is not as effective as the natural cholecalciferol form. Here is a good site for info on D.
http://www.cholecalciferol-council.com/index.html