Feelings...even how one sees oneself...can certainly change in the moment. I would guess that most emotional responses are situational, rather than a reflection of one's gender. I am certain that over the course of a day, there are few moments where daily activities, my thoughts or my behaviors are defined by gender as such. Isn't this true for everyone, TG or otherwise?
Maybe if pressed to define one's gender in a given moment, the answer would be different because the context might really not relate to gender at all.