Anyone try Vitex?

Had anyone tried Vitex to help their chances? I did some research and many women said it did the trick! I've been on it for 2-3 months and no luck yet... I'm 33 and have been TTC for almost 4 yrs now. I'm a bit nervous to go to a fertility specialist and really hoping it happens on our own!! There's really only so long to keep my fingers crossed...