Should I stop taking Vitex?

I had a 24-26 cycle, but I never ovulated on my own so I decided to take Vitex. I have yet to have a period and I am approaching CD 60. Should I stop taking Vitex indefinitely? I was so excited to try the natural route and looked forward to avoiding the horrible side effects that metformin gave me. It also gave me false hope as I thought I was pregnant and I'm not. Has anyone taken Vitex and had a messed up your cycle as a result?