I chose not to colour my hair during pregnancy. But a lot of people do say it is fine. This is usually only anecdotal tho, coz they say their kids turned out fine (so far anyway ) but yeah, I figured it was something I didn't HAVE to do (altho the regrowth was pretty horrid) and that I could wait.

I think too your skin can react differently during pregnancy, so that's another reason to avoid it in case your scalp reacts badly... which is why some people go for foils but not near the scalp.

Just do what you're comfortable with. If it worries you, then just wait and give yourself a great makeover once bub is born.. it'll freshen you up when you're feeling a bit worn out with bub too hehehe.