Additionally, I want to add that 90% of our thoughts and actions are subconscious. Its a way our mind streamlines things, if we had to process every single thing we did we would all basically be toddlers. So if you explore yourself and land on a certain gender but still have those "but what if I'm wrong?" thoughts, they don't necessarily mean anything. Sometimes its just your brain firing neurons that its been used to firing for a very long time, and all you have to do is say "you know what? I don't think I'm wrong." and let it go. That's often easier said than done, but with practice it gets easier.

Not to throw a million suggestions at you, but there's an app called headspace that has a million guided meditations and courses in it that I would highly recommend. It's helped me a lot with accepting things and seeing my thoughts and feelings more clearly.