D.W.
I'd agree with LL to check with the La Leche League to see where they may guide you.
Good luck.
I'd agree with your OB/GYN's recommendation regarding herbs/supplements. There's little concrete scientific evidence to support they actually increase breast milk volume. If you can get your child to suckle more frequently, that usually has a profound effect, but if you have a medical condition that limits it, you may not see the results.