Perhaps we are using different definitions. I'm using this one, and similarly in other dictionaries:

http://dictionary.reference.com/browse/feminism

So by the dictionary definition, you are a feminist (and, of course, based on your advocacy of social and political rights for women, I and anybody else using a dictionary would describe you as a feminist, no matter how much you insist that you're not).

What definition are you using that means that you're not, and what's the source of that definition? It's not really fair for you to be using a different definition without saying so in advance.