http://www.thefreedictionary.com/musicianOnly in one definition does it even mention playing as a profession, and at that, it is not mandatory to fill the requirements for the definition of the word.
Anyways, Ive never called myself a musician, and in fact Ive been called that by everyone I know. I deny it, and they treat me as if I am crazy.
I just love music. Music has saved my life on countless occasions. Whether it is my music, or someone elses. Personally I could give a crap how many albums sold (gold= 100,000) or who they know, or what gender they are. Our souls have no gender. Music has the arcane ability to create a channel between the consciousness and the soul, to discount that on terms on popularity, gender, or financial solvency is to eliminate the only thing that makes music appetizing, the soul.
Marta: play your part, and if you're not content, keep pushing forward, but always try to ride parallel to the moment.