why no caffeine?

Mj96 • Full time mother and student. I'd like to stand out from the normalcy of the world.🤰🏾🙋🏾👸🏾👼🏾
So can anyone tell me the reason why caffeine is limited during pregnancy? I could probably check google but I'd like to hear reasons why your OB told you to cut back...I'm sitting here looking at my 4yo thinking I drank a lot of caffeine with her and she is the most hyperactive kid I've ever met in my life 🙄 and with me being so fatigued I barely have the energy 😩