I'll probably be getting my hair bleached and dyed blue soon. Earlier on in my pregnancy I bleached it and dyed it purple. I wasn't very careful back then because I was still adjusting to the thought of being pregnant. Luckily everything's okay, but regardless I plan to make a note to my stylist that I'm pregnant and need ventilation and anything else they can do to minimize the amount of fumes I breathe in. There may even be a kind of bleach/dye they can use that would be safer.

Yes and yes I did both pregnant I would do the bleach in a foil so that it's not a strong smell and just watch it extra close. I've had my hair dyed black on and off for years so lightening my hair is usually a huge pain. Something about my pregnancy hormones my hair lightened up from a soap cap in like 15 mins so keep a close eye !! Other than that make sure it's a well ventilated area and don't be surprised if you get a headache ur body is more sensitive pregnant. Good luck !