Working out while pregnant..?

Timethia • Happily married💕 born again Christian ✝💒🙏 25 yrs old, minister of the Gospel of Jesus Christ ☺️💜
When do you start working out while pregnant? I'm currently 4 weeks and I don't want to hurt the baby.. And what kind of workouts can I do and can I not do?? 😊☺️💜