How do you ladies feel about dying your hair while pregnant?

I colored my hair quite a few times with my first pregnancy. And my daughter has a few medicial conditions that have a lot of unanswered questions to them. So needless to say I'm being extremely careful what I'm doing with this pregnancy. I guess you can say I'm worrying and questioning things a lot. My hair is naturally brown but I've been dying it blonde for years and my roots are really bad. Would just like any advcie thanks! ☺