Dying hair

I got pregnant recently, less than 6 weeks, and via IVF. So prior to knowing I am pregnant, I was resting during the TWW. So now cny is just round the corner and I haven't buy my clothes, dye my hair and all those cny groceries shopping! While the rest can shop online, my hair is in a messy state now. With split and yellow ends. I wonder can I do DIY hair dying now? Is it harmful to the pregnancy?