Survey Please!

MGALBN

I currently color my hair and I've read a lot of conflicting info on whether or not I should continue doing so when I become pregnant. Some research suggest switching to only highlights which would prevent the chemicals from being in direct contact with the scalp. Others say I that not enough chemical is absorbed by the scalp and I should simply use colorants with the fewest number of chemicals possible. Everything suggests I not color in the first trimester for sure.

Does anyone have any thoughts on this? Experiences? Anyone ask their doctors this question? Any definitive data sources that I could check out?

Thanks in advance for any/all responses and baby dust to all!!!