Shannon you are wasting your herbs and you are wasting your Yasmin. The Yasmin & Dom need to be taken together. It sounds like you will be doing the accelerated protocol. So here is what I suggest. Order a lact-aid
www.lact-aid.com Begin the dom & yasmin when your Dom comes in. Stop the herbs for now. Since you are already taking the Yasmin I would continue that and just add the dom once you get it so you don't mess up your system.
Start counting your 30 days once you are taking both together. You only take the active Yasmin pills. It sounds like your son will arrive before you finish the 30 days this is why you need a lact-aid. You can nurse him with that using donor milk or formula until you finish the protocol. Once your 30 days is up you stop the yasmin and add the herbs. Continue to nurse with the lact-aid pumping after feeds when you can. (A baby is much more efficient than a pump, but pumping will also help bring in your supply). It is always suggested that you see an international board certified Lactation consultant for help with latching and any other issues that may arise. You can search for one in your area here
http://www.ilca.org/falc.html