TTC #2!! Vitex??

My husband and I have been TTC for 6 months now. I was went to my dr a few months ago for my yearly and told him that we were trying again but now luck yet. I told me that a PCOS ( polycystic ovary syndrome) which was making my cycles off. A friend of mine said she was taking Vitex. So I got some and was wondering anyone has had any bad experience with taking it for fertility or if it worked for you to conceive? We got pregnant DD 2 months after trying for her. So it has me a little worried we can't have more. Thanks in advance :)