"Passing" is all about "Who you are, between the ears." Irrespective of gender, if you lack your own self confidence, self respect, identity as a person, you'll get "clocked" simply as that. As who you perceive yourself internally, you'll be perceived externally by others, perhaps even less so, as they don't understand you. This is all part of the non verbal communication/signals/vibes you are sending out about yourself; as a person.
Now add gender to the equation and you've compounded the situation substantially.
Take time out. Get to know the REAL you, deep down inside. Let this grow, mature and radiate outwardly, so there can be NO mistake as to who you really are.
You WILL be pleasantly surprised to find that strong, loveable, compassionate person; and so will everyone else you meet will too.
It's your decision. And it's only one decision away. You can do it now. This choice is yours.
Huggs
Catherine