We're also matched with an e-mom due in late March, and I've been doing a modification of the Newman-Goldfarb protocol for a little over a month. I'm holding off on pumping until 6 weeks or so before the due date, but so far with just the domperidone and herbs I've seen a cup size increase in my breasts.
I'd suggest going to the ask lenore website and taking a look at the accelerated protocol. Also get in touch with your local LaLeche League and/or a lactation consultant who can talk to you about renting a breast pump and show you how to use it. You really want a hospital-grade pump rather than one you can buy in the store because it much more closely simulates the stimulation your breasts get from nursing, and that's the big thing to help increase your milk production.
And congratulations on the new baby!
