Veritas, you might want to check out the LLL forums. Piper went through a similar phase at that age and I think it was an annoying growth spurt rather than a supply issue. Is her weight gain ok? How is her latch? The pumping thing may or may not mean anything. I get much less from pumping than one would expect, but Piper gets a lot. Babies are more efficient than pumps anyway. It would be worth talking to an LC though. I've heard good things about oatmeal and fenugreek if you do determine you have a supply issue.
Also, check out kellymom.org (or .com?) for info on the beer issue. Apparently beer actually doesn't help and may hinder aspects of breastfeeding. I don't let that prevent me from having a nice IPA now and then, but I guess they say don't expect it to help with supply issues.