Could be a responce to, the recent corecting people who mis gender you thread.
There is a lot of factors envoled in dreams, but more often then not the thintgs we think about right before sleep can often have a larger role.
If you have had worries of being mis gendered, thought about how you would react if you was. and even just some recent passing concerns. however slight can all of been a factor.
no matter how recent.