A supermom.

Ay, I understand the worry, I had a moment like that din when I wasn't sure pa if I was pregnant! The thing is, hair treatments and coloring at 5 weeks is pretty early and the baby's not absorbing much yet, but since you're concerned about nervous and circulatory development specifically, I'd really suggest checking with your OB just to put your mind at ease, they can give you the most accurate reassurance based on what products were used. A few of us mums have been through similar scares and honestly, our doctors were way more relaxed about it than we were, which helped us breathe easier. Keep an eye on how you're feeling and book that appointment soon lang so you can stop the worry spirals, mommy.