Cd45 today - inducing AF with vitex?

Hey all! I'm cd 45 today and no signs of AF. I tested just in case and I am not pregnant. I was going to hold off on vitex until I gave my body a few months medication free but I feel like my body is doing nothing and I need to move things along. Has anyone had luck with taking vitex and getting a period? How many pills a day and morning or night? I am not going to go the doctor route because we are currently pregnant via a surrogate and I'm not in treatment right now.