I have been losing brake fluid lately. Today while driving down the highway I started hearing all kinds of noise coming from the rear driver side tire. I pulled over and smoke was coming out from behind the rear wheel. The smoke was only coming out of a little spot where it looks like a rubber oval shape thing is missing. Could my rear brake pads on the drum have broke and just kept making noise. Sometimes it would stop. !?? I also noticed a bit of a pull to the right side. Can anyone help me.? Please!!!