I found my supply would drop a bit during my period as well. My son would be crankier during those days. Gosh I hope AF doesn't come back for a long time because I'm not sure how all three kids would cope with a diminished supply.

I hope the fenugreek and lactation cookies help. You can also try blessed thistle (I take it in a tablet that also has the fenugreek in it) and I think I've heard of people taking alfalfa tablets as well.