Hair dye during pregnancy

Ja
do you girls think it's okay to dye your hair??
I have in the past many times 
But not while I'm pregnant my hair was already bleached before I got pregnant 
In my 1st n 2nd month I used a vegan hair color dye which was not harmful then a month later I went back to my normal hair color but I used the loreal (harmful chemicals ) which they do have since then I haven't dyed my hair 
Do you girls think it's okay to get it done at a salon like natrual colors?   
And do you think staying away from bleach is better? 
I am 22 weeks right know.