metformin and vitex

Ashleigh • Married to my best friend. We have a 6 year old son, 1 miscarriage and currently ttc our rainbow baby 🌈👶🏻
I have PCOS and started taking Metformin ER (extended release) in April. I would love to start taking Vitex as well. Are these safe to take together? Any success stories? I had a miscarriage last March and have been ttc for two years.