Has anyone used Vitex to help conceive?

Jessica
My husband and I have been trying to conceive for the last 2.5 years.   We have unexplained fertility.   We have done 5 cycles of IUI with Gonal F and Ovidrel .  I responded well to meds but all were failed cycles.    
We have decided to stop going for the fertility treatments and that's when I decided to do some natural research.   
Wondering if anyone has been thru the same thing and took Vitex, along with anything else and conceived.    If so,  what doseage did you take and did you take anything else?