diindolylmethane and pregnancy (DIM)

Hi, I have long cycles with a shorter luteal phase and lots of brown discharge before my period actually starts. My progesterone levels have been normal but after researching I feel I could be a bit imbalanced with estrogen so I’d like to get this to regulate my cycles. However, I plan to start trying to conceive soon and I’m a bit concerned if I stop this it will affect my pregnancy If I do become pregnant? Any advice / shared experienced would be greatly appreciated 🙏🏻🙏🏻

Paige