what do i do about being trans?

Keep your chin up man. I'll tell you the way I went about coming out and hopefully you can gain some encouragement and hope.

I started with myself. I allowed myself to explore every little inch of the idea that I was a boy. I discovered just how much I hated my body. I researched hormones and surgeries and stps and binders and I was enthralled in transition videos. Once I was more comfortable with the idea and knew this was what had been bothering me all my life, I started to tell others. Tell all your friends. You'll lose some but you didn't need em. Now stand your ground. When they say **** like, wow you looked like a guy from behind!, tell em straight up "it's because I AM a guy." Once your friends are using your preferred pronouns and you're happy about that then either tell your family or hold off for a bit longer. I bought a binder and an stp before telling them. They took it rough but eventually came around.

You've just gotta learn to take it one day at a time. Good luck!!!

Coming out is hard,but it sounds like your mom doesn't understand. Try sitting down and talking to her about it. Pick a male/gender neutral name that you think goes with you the most, don't respond to your female name whatever you do. Start living as a guy socially asap (at school, out in public) and don't worry about what anyone thinks or says about you. No one can stop you from being who you are.