I think you're going to have to figure out what to call yourself-- and this is more about introspection than anything. But, you will have to realize and potentially get over your self-perception problems with several of the titles listed.
For example-- a homemaker does more than just 'wash floors'-- do you clean, care for the children, take care of grocery shopping, laundry, and all the other things that are involved in being a homemaker. A homemaker takes care of the house and family. That is the definition.
Going on, many educational jobs don't require "qualifications." You are a math tutor because you tutor people in math. Presumably they improve with your help, therefore, you are a math tutor. How are you unqualified? Because you haven't gone to school to be an educator? In Michigan, you can be a long term sub with on 90 credits of college. That's right, you can do most (if not all) of a regular teachers job without even being on an educational track so long as you have 90 credits of college. Being able to teach (or tutor) is what makes a person able to call themselves that. My mom calls herself a computer teacher, even back when she taught comptuers through the local community education program-- she has no teacher training. She taught, and thus was a teacher. It's not a trick of semantics, it is what itis.
And as Yeshanu said, if you write, you are a writer. (Though careful, this can be a dangerous statement to make because everyone wants to be a writer, or tell a story, or whatever.)
You could also call yourself a mother. That's a big role in and of itself.
This really is a question of how you see yourself. I'm going to guess (little armchair psychology) that you're having trouble not just with semantics but with where are in life right now. You don't quite know who you are, which makes it hard to figure out what to call yourself. But understand that you are who you decide you are.
Best of luck.
(My answer is usually "alternative high school teacher" but it does change depending on who asks-- sometimes includes real estate agent, online course facilitator, writer, wife, daughter, sister, sister in law, etc. ;-)