Am I overreacting...?

So my wedding is in a year and my side of the family is very “redneck” but it’s safe to say that I very much am not. My dad has been growing out a mullet and I HATE mullets. I asked him to shave it for the wedding and he said no so we got into an argument about it and I left his house crying. Keep in mind that I also have a sister (20) and everything revolves around her. I never ask for anything and I do everything on my own so this kind of just feels like a slap in the face to me. Am I overreacting?

Side note: I’ve been TTC for over a year and I’m two days late now, I haven’t tested because I always get so excited after being one day late and get let down. If this is pregnancy hormones, I’m going to cry the whole time lol.