The problem with Transgender is that it means so many different things to so many different people. This is why it has become an umbrella term for all who have a cross sex experience. I guess you are asking if you are among the Gender Incongruent people who might transition?
At this time there is no definitive way to know this, and while there are psychological markers like persistent questioning of your gender, it depends on eliminating a number of other possible causes for this, and the experience of a therapist to make their educated guess. We cannot know from what you have said.
Transitioning is a huge disruption to our lives, and often costs us things and people we love, as well as a lot of money, so it isn't something you would do unless your life was severely affected. This is usually due to gender dysphoria.
Generally, if your life is constantly disrupted by feelings that you are the wrong sex, it is time to get help. Some people do get sexual pleasure from imagining they are someone else, often someone of the other sex, and this may not be Gender Incongruence. Dysphoria from Gender Incongruence usually comes in waves of frustration, and doing something affirming of the opposite sex will bring some relief. Even if this applies to you, it does not mean you need to transition, as there are many ways to manage Dysphoria once you have recognised your Gender Incongruence. Dysphoria can get serious enough to make us seriously sick, so it must be treated at some stage, but it is accepted the only way to rid ourselves of dysphoria is to transition.
You may just be a bit kinky, which is ok, and should just enjoy this without guilt, but there may be something else behind it. If it is causing you distress, find a therapist to help you! Good luck!
Hugs,
Allie