pumping while preg.

Any moms pumping to produce colostrum after 38 weeks? Share ur wisdom!! Best way to store it and so on. I know it can cause contractions but at this late stage this fine with me?! And also I've been told that contrary to what most moms say , that your body will keep making this liquid gold untill the placenta is delivered. I've saw were moms have bags and bags of this stuff stored!