TeX/Latex - PROBLEMA con enumeración

Hola, tengo un problema, resulta que solo me enumera del documento la primera página de cada capítulo, ¿por qué será?. Este es mi encabezado:

\documentclass[12pt,a4paper]{report}


\renewcommand{\chaptername}{{Capítulo}}
\renewcommand{\contentsname}{{Índice}}
\renewcommand{\bibname}{{Bibliografía}}
\newcommand{\inp}{{\sf \hspace{0.05cm} in}}
\newcommand{\out}{{\sf \hspace{0.05cm} out}}

\usepackage{amsfonts}
\usepackage[latin1]{inputenc}
\usepackage[spanish,activeacute]{babel}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{epsfig}
\usepackage{fancyhdr}
\usepackage{theorem}
\usepackage{epsfig,graphics,graphicx}
\usepackage{psfrag}
\usepackage{float}
\usepackage{stmaryrd}
\usepackage[spanish]{babel}
\usepackage{pstricks}
\usepackage{pst-plot}
\usepackage{pst-fill}
\usepackage{xcolor}
\usepackage{subfigure}
\usepackage[colorlinks=true,linkcolor=black,urlcolor=black,citecolor=black]{hyperref}
\usepackage{geometry}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usepackage{anysize}
\usepackage{array}


\marginsize{3cm}{2cm}{2cm}{2cm}

\setcounter{secnumdepth}{3}

\pagestyle{fancy}
\fancyhf{}
\fancyhead[L]{Javier Teruel Reguera}
\fancyhead[R]{{\nouppercase\leftmark}}


\begin{document}

\renewcommand{\tablename}{{Tabla}}
\renewcommand{\contentsname}{Índice General}
\renewcommand{\listfigurename}{Índice de Figuras}
\renewcommand{\listtablename}{Índice de Tablas}
\renewcommand\appendixname{Anexo}




\pagenumbering{roman}
\tableofcontents
\addcontentsline{toc}{chapter}{Índice General}
\newpage
\listoffigures
\addcontentsline{toc}{chapter}{Índice de Figuras}
\newpage
\listoftables
\addcontentsline{toc}{chapter}{Índice de Tablas}
\newpage


\pagenumbering{arabic}


\input{informprev}



\input{Bibliografia}
\addcontentsline{toc}{chapter}{Bibliografía}


\end{document}