One of the difficulties of the "there weren't any signs you were trans" conversations is that a) I disagree but also b) I was doing my best for there not to be that's kind of how growing up in transphobic society can work sometimes
Part of being a trans kid is knowing that you're not supposed to be.
If you have a fediverse account, you can quote this note from your own instance. Search https://social.treehouse.systems/users/PallasRiot/statuses/115789922054610777 on your instance and quote it. (Note that quoting is not supported in Mastodon.)