Yea that is the beauty of life, we can change our minds! That is amazing that you decided what you want and did it. I am sure having a child and not being married gets a lot of questions. My family always told me if i did have kids, I would do it alone. They knew I never would but they also never know what to expect from me.
Admitting you do not want to get married gets the same questions as if you do not want children. And honestly, it is no one's business what you choose to do with your life.
Very admirable of you and how you are making the best decisions for you and your child.