I can't tell you how to use it but I can tell you how I use it. I take the bottle recommended dosage everyday EXCEPT DURING AF. This is because it is a blood thinner and can increase bleeding. Once I have begun ovulating (which when I first start herbs I am not) then I use it from ovulation to menstruation.
Shana Albo in her book Infertility Solutions recommends it from day 14 to AF for women with PCOS.
Amanda McQuade Crawford on the other hand recommends its use pre o.
Decisions, decisions!

Sheri