My OB recommended fenugreek to help me build up my milk supply. I turned into a commercial dairy--it just kept coming! It was great because my milk supply leveled off at a high level, and I kept pumping after each feeding, so we always had plenty of milk on hand in case I wasn't there (or just to give Mom a much-needed break once in a while). That was kid #1.
With kid #2, the current kid, I started taking fenugreek immediately after his birth. Within two weeks I had to stop taking it because I was producing so much milk I was forced to pump. :-) This was a nice problem to have. It built up my supply immediately to a healthy level.
With fenugreek as a kick-start, both my sons were chubby, rosy, and healthy through babyhood. You can drink fenugreek tea or take fenugreek capsules. I much preferred the capsules because you could swallow them, or pour the powder into a drink and just chug it down. I poured it into my water as a motivator to get lots of water down fast. It always worked. :-) I've heard the tea works too; it didn't do much for me. Every woman is different though. Best wishes to you!