I’ve reason to believe that the girl I’m speaking to might be a transsexual(which is a dealbreaker for me) but I cannot confirm this.

I don’t want to ask her directly since it’s rude and inappropriate. Is there a subtle way of asking

Someone suggested saying something like "hey, I'm not a fan of periods, is that something I have to worry about with you? 😉" I thought this was kinda creepy but what do you guys think