Trying to get pregnant

Hello.. I want to have my first baby and I’ve been to the obgyn for my irregular period.. they said I might have pcos and might not ovulate bc of them being so irregular so I couldn’t keep track. So I got on birth control took it for a month or so but I’m now really wanting to try for a baby. I’m young but i am overweight .. I heard a lot of success stories of Vitex? What should I start with Vitex and a prenatal or just vitex? Thank you