Suggest Treatment For Torn Upper Forearm Muscle

I strained or possibly tore my upper forearm muscle while doing a warm-up preacher bicep curl. It was excruciatingly painful. I could actually hear a tearing sound, immediately followed by the smell of iron (the smell of blood), and the appearance of a rash the length and width of the effected muscle. What have I managed to do to myself? I am a lifelong gym rat and this is the time I have injured myself to this degree.