Dealing with Odd fear

Hey all, so I know that I am Trans. However, I have this fear that one day I'm going to wake up a cis guy, which scares me. I feel like when I realized I was Trans I finally had an answer. I still experience dysphoria, and euphoria when people use my pronouns and chosen name. But this nagging fear never goes away, I know it is irrational, but does anyone know how to deal with this? It seems like it is a type of imposter syndrome. Anyway, thank you for taking the time to read my post. - Bailey (she/her)