Vitex with BFP

Mallory β€’ 27 year old πŸ‘©πŸ» Vet Tech 🐢Married to my amazing husband πŸ’ EDD 12-24-17 πŸ’—πŸŽ€πŸ‘‘πŸ‘ΆπŸ»
I started taking b12 B6 and Vitex this last cycle to extend my luteal phase and got my BFP and I'm 4 1/2 weeks. Should I continue taking Vitex and the b vitamins?! Will it harm the baby?!