Gum Infection or Too Aggressive Brushing

[Trent C]

Hi, over the past few days I have been having a bit of pain and a bit of a sour taste on one side of my mouth by the molars. Upon investigating today I noticed I have some raw red spots on my gums. I do at times get a little to over zealous brushing. I was wondering if these pictures (on of the opposite healthy side and the other the bad side) would be any help in identifying which it may be. I am trying to get a dentist appointment however I am in a small town so unfortunately this means long way times. I am concerned this might be a sign of needing a root canal. I was hoping to have someone let me know either way so I may not spending so much time researching and stressing myself out. Thank you for your time

Healthy side:
http://s848.photobucket.com/user/Rum...4.jpg.html?o=0

Bad Side: http://s848.photobucket.com/user/Rum...0.jpg.html?o=1