I can't trust any man

By transboy, I'm assuming FtM, correct?

Do you feel particularly threatened by cis-males, and why? Is it because of your birth gender? Do you think once you fully transition, that will go away?

I can't imagine why that should be normal...

I was wondering, if it was because you're trans... you say you're young, so I'm assuming you are as yet untransitioned. I wonder if it's feelings of inadequacy. Being female is associated with being the weaker sex (despite they have greater physical endurance and I think pain tolerance, etc), and maybe that's part of what's eating at you when you're around guys that were born guys. My birth gender is male, and even though I'm somewhat fluid, and strongly prefer/envy the feminine gender, I know I struggle with feelings like that. So that's one direction I was leading to.

As far as other directions, have you ever been hurt/molested/etc by a guy, that you should be uneasy around them?

And yet another direction that occurs to me- and I may be speaking a little treason here, but there are transpeople that detransition when they realise they had other issues going on... could your desire to transition FtM, be a way of defense against the uneasiness you have?

All things to think about, and if you're still pretty young, you've plenty of time to ponder these things. Anyway let me know what you think about any of these ideas I'm throwing out there, if anything resonates with you.