Help! My insurance does not cover a breast pump.

Stacey
I Just found out today that my insurance does not cover a breast pump. This was quite a surprise to me because I thought it was the law that they provide me with one but apparently they can be "grandfathered in" and opt out of providing one. Aside from buying one or renting one does anyone else have any suggestions on how I can get one for free. I cannot afford to buy one and I have to work so I'll need one. 
I am extremely disappointed in our insurance company and employer and cannot understand why they wouldn't want to provide one.