Do any of you Bees take a vitamin D supplement? If so, how many "IU" do you take?

I've had a vitamin D deficiency for two years now. I'm planning to add a 2,000 IU supplement along with the 1,400 IU I already get through my prenatal vitamins. I'm meeting with my doctor in a couple weeks to discuss this but would love to hear what you girls are doing in the meantime.