Dad makes fun of me (tw ed)

Dad makes fun of me for using a kiddie tooth brush. For ages I've had trouble brushing my teeth cause in my past I used tooth brushed to make myself barf. I use kiddie tooth brushed cause it calms me and then I don't have fear of my thoughts cause it's shorter than a normal toothbrush. I always hated it when I left my toothbrush at dad's, cause someone always had a comment on It. Now I need to keep it there cause I have two, I told dad it's mine before he accidentally throws it away. But he asked why I have it cause it's a "baby toothbrush" It fuels my regression and keeps me calm when I brush my teeth. Is it that bad..? My toothbrush and paste are from Pikachu, the age on it being 6+. Am I weird for doing this? For having this..?