is it imposter syndrome ?

idk, if i knew it is imposter syndrome, then i'll just know that i am a girl. But this feeling is so hurtful.
From the time I wake up to the time I fall asleep I am constantly trying to find evidence that I am trans and trying to prove myself that I am trans. WHY ?
I don't have many signs that i'm trans. Even if I do, they can be explained by some other way. I feel terrible. I know many other trans girls and almost all of them have always been feminine, always related to female characters in games/movies/books.

All I know is that I feel terrible. Life is miserable. I can only distract myself from this question to feel happy temporarily, I cant feel happy at all 😭

this post is probably very stupid and doesnt really explain much, i just cant. I can only grab a several words that flow rapidly through my chest!