R.B.
Oatmeal, lactation cookies http://realilfemum.blogspot.com/2010/08/lactation-cookies..., make granola with oatmeal and flax seed, fenugreek, hops, brewers yeast. Things with high fiber.
Feed feed feed.
Update... what Rachael says is true about the flanges/shields on the pump. Go to the madela website and look up correct fit and make sure your flanges are the right size. It will make a big difference. Also a warm wash cloth on your breasts. Kellymom is a great resource for breast feeding. There are loads of solutions on there.