This paper aims to present an analysis of sexual gender from a socio-constructionism approach. Instead of looking at the dominant cognitive and socio-cognitivist perspective —S. Bern, H. Markus and so on— in the study of gender identity and sexual stereotypes as a background for the research, the author proposes to take critical post-structuralist feminist thought as a theoretical base for the study of construction of gender and subjectivity. Since the author thinks that language is a tool for transforming and creating reality, it is very important in this paper how subjectivities are presented as a creation of language games that give them their consistency and form. The next important matter that is presented in this article is power relationships —from a Foucault-tan approach— acting upon subjectivities formation as forms of regulation. So, from this point of view, discourse analysis appears the best methodological strategy for discovering the subjectivities related to gender and sexual differences. The results of the discourse analysis of women's ordinary explanations about themselves show different subjectivities with different agency levels concerning the reproduction or transformation of the traditional subjectivity of women.