Dying hair 5 weeks pregnant

Everything I’ve read says to wait until you’re out of the first trimester before dying hair but what if I’m not touching my roots at all? All I’m doing is using color oops to get out some purple which I think is ammonia free even, and I have about 2 inches of growth with no purple so I’m not even going to the root on that one. Then I’m doing a balayage highlight again not touching the root. Then I’ll have to use a toner but no reason to tone my root if I’m only toning highlighted part. What do you guys think? Safe to do at 5 weeks?