I had trouble with vitex and delayed ovulation when I was ttc DD. I stopped taking it and took maca instead - its a root that nourishes the hormone glands and encourages proper hormone balance without simulating a hormone (like vitex does). It's meant to be good for fertility for both men and women and I my BFP the first month using it with DD. This is my first cycle trying again for no2 and I'm using it again. awaiting AF any time now so we'll see! Good luck hun.
I thought that vitex simulated hormones too before I looked in to it, but it actually claims the same effect as maca but just focuses on balancing different parts of the reproductive system. It is definitely does not simulate any hormones! Very important to understand that it helps to balance the adrenal axis so that it produces the optimum amount of each hormone on it's own needed for ovulation and conception. I attached a few articles to explain this as well as a side by side comparison of maca and vitex which btw can be taken together successfully
https://www.natural-health-for-fertility.com/maca-or-vitex-for-fertility.html#.UsWc5fRDsxE
https://www.early-pregnancy-tests.com/vitex.html
https://natural-fertility-info.com/vitex