|Jish, sorry to disapoint you. When i was pg with the girls i mostly drank only one glass of milk and some in my cereals a day, now DD1 is lactose intelerant and dd2 is allergic to milk and a few more food items. So, the amount of milk you drink a day can't be what makes them have milk sensitivities.
It isn't necessarily the cause, but some doctors recommend cutting back on the amount of dairy (as well as other high ranking allergens such as peanut butter) in the last trimester because the theory is that consumption in the last trimester can sensitize the baby in utero. I've already dealt with my first child who was a miserable baby because I missed that he had dairy issues. Had I figured it out sooner, he would have had a much happier first year of his life. I wasn't a big dairy person either and he had issues with it, but I certainly don't want to tempt the fates.
I don't know if I could make it through with another baby as crabby as him.