Hair Dye During Pregnancy

I am 26w4d pregnant with my first (a baby girl 🎀)! I went to have my hair dyed this morning. I made the appointment for a balayage, because I know that the dye barely touches your scalp in that process. However, my stylist ended up doing a full head color instead to give me the look I wanted. I asked my doctor 3 weeks ago if it was safe to get my hair colored, and she said yes...but now that it’s done I’m having first time mom paranoia! My stylist wasn’t worried either. She said if it was that dangerous then they’d learn about it in cosmetology school, and that 3-4 stylists in the salon, who are around the chemicals all day every day, have all had healthy babies over the past couple years. I guess I’m just looking for some reassurance that it’s safe to dye your hair during pregnancy! What do you ladies think? What are some of your experiences?