Pregnancy and getting a color treatment

What’s everyone’s thoughts/ recommendations on getting hair color treated while pregnant? My appointment is coming up and I am 6 weeks along and no one knows I am pregnant yet accept my husband and I. My hair dresser is my very good friend and I have to tell a little fib if I can’t go to my appt! I usually get a cut and touch up on highlights but I have researched and keep getting mixed reviews on whether or not it is safe 🤷🏻‍♀️