I think your thoughts are perfectly normal for someone aged 22. You'll probably start considering things differently when approaching 30.
Not saying that from one day to the other your deepest wish will be to have kids but you will start thinking about it more often and it will feel less scary over time.
Thank you! Most of the people that I know don't think this way though but good to know it's normal in your opinion. Makes me feel I'm on the right path.