Experienced this during first trimester! I dread brushing my teeth especially tongue the whole trimester. I didnt change toothbrush but toothpaste. I got the one with milder taste. Not minty.
I tried both ways too.. But because i have toothache as well so i used sensitive toothpaste.. So my toothache better but have to bear with the nausea feeling.
Praying For My Little Rainbow!