You need extra calcium around the third trimester anyways because this is when their bones really start hardening. You actually need four 8 oz of milk a day at least.

i have to do the same, i have heartburn whether pregnant or not just got 50 times worse once pregnant, milk is the only thing that helps me i always just drink a glass of water afterwards

drink as much as you need, just drink just as much water too, because you still need the water