Salon stylist told me they still did hair pregnant and most the time they know if it's safe to do something or not

Yep u can

After the first trimester I continued to get my (at the time platinum hair) roots touched up and it was no problem. It’s really up to you and your stylist, as long as you are both comfortable I say do it :) pamper yourself while you still can!

You wouldn’t be able to dye your roots. I was always told that you can’t put bleach to your scalp

Definitely- any reputable salon will be well ventilated (:

Hopefully it takes

Yep, just make sure the area is well ventilated.