Terminal, Prompt changed to "-Bash-4.2" and colors lost

Usually my terminal prompt was username place$ now it only shows bash-4.2$ and all the color settings have been lost (on the terminal profile I have the same color scheme, but it just don't show colors) I don't have any idea of what happens (and I don't know how to search for this). It changes from nothing, I was working with eclipse and maven, opened a new terminal and the new terminal didn't have colors. Note: I don't have a ~/.bashrc file, but I have a ~/.bash_profile.