It's fine but if ur worried use a rinse/semi-permanent (which is only a conditioner) instead of color.
What I have read and heard was the chemicals can get into your skin and affect the baby and also its not good for you to smell the chemicals, but I also herd that if you are in a room with a lot of air where you can breath and don't die your hair to often it should be fine I've died my hair 2 times since I was pregnant and I have a healthy baby it should be fine :)
As long as you're out of your first trimester dying your hair is fine, but your hormones effect how your hair takes in color so it might not turn the color you want it to. I dyed my hair back in November and it turned red! I have dyed it twice since and haven't been able to get it back to brown its still reddish
I am a hair stylist for 6years. It's fine to colour your hair aslong as you do so in a salon where a stylist can keep an eye on the colour because home box dyes have a higher peroxide in it because the company Duno what colour of hair the person buying the dye has got so they need to make sure it covers all hair types so I would say don't buy ur own hair dye out a shop. The stylist in the salon will tell u she can't 100% make sure the colour is perfect because the hormones in ur body can affect.
I am 38 weeks pregnant and have colored my hair about three different times during my pregnancy. I got mine professionally done. I wouldn't recommend doing it yourself. I talked to my dr and my hairstylist and they both told me it was ok. And the aroma isn't really that bad either
I was told the fumes aren't strong enough to affect the baby.