Breast pump through insurance?

Laura • I am 25 years old and engaged to the man of my dreams. We are looking forward to meeting our daughter on 03/20/2015!
So I have heard a lot about some insurances paying for a breast pump. Can someone explain to me how I would find out if my insurance is one of those that would pay and if they do how do I go about getting one? I am due in 7 weeks and I want to be prepared for when she comes. Thank you for your input!