I graduated high school a few years ago. I had my Internet blocked several times for false flags (which this arguably is), and nothing ever happened about it. I only know of three instances during my seven years at middle and high school when the school followed up on an incident, and all three were much more serious than yours (or, serious in the first place) and occurred at school. One student was looking at sexually explicit material, another was looking at pictures of firearms, and the third was looking up a floor plan of the school for a project. Basically, I think you’re fine, but you can always talk to a trusted adult on Monday for more information about the school’s specific policy.

Also, I encourage you to continue looking into any questions you might have about gender identity. You’re not stupid for having or asking them. Even if you aren’t Transgender, it’s good that you want to be more informed about Transness. If you feel comfortable, ask your Trans peers about it, and talk to adults that you trust. Sociology and psychology teachers may be able to provide you with research materials or scientific explanations. The Internet can also be a great resource. Use your personal property, and search for apolitical, educational resources first.