First, that is 100% okay, these things take time, and sometimes it's hard to understand how you think you are feeling even if your not questioning who you are, it actually took me a few years to find out what non-binary means, and even longer to discover the term agender.
Second, this is up to you, and only you. If someone says you might be a sexuality or gender, and you don't agree with them, that's perfectly normal. it is your, only your choice to make.
Third, If you're having a tough time understanding who you are, YouTube videos, articles, and websites like this one can help a lot.
Fourth, try talking to someone, like your family or friends ( you can even message me and I'll talk with you if you would like <3 ) they can help you understand what you're feeling
5th, feel free to change your pronouns ( if you're trying to figure out your gender ) for periods of time to see how it feels, same goes for sexuality's, try labeling yourself as ( ex.) homosexual, or bisexual for a period of time and see how you like it.
Just remember that no matter who you are, where your from, or what your dealing with, you are loved and you matter.