Thanks for the responses, all. The reason my jaw joint is screwed up is because I had a habit of intentionally popping my jaw, like one pops one's knuckles, and I thought nothing of it until the mild symptoms began. I then looked up the problem and found out about 'tmj'.
My jaw hasn't cracked in three or fours days now, and there hasn't been any 'swishy' fluid noises in my joints. I hope this a sign of healing, but this is the way it has been since October...two or three days like that, then a 'crack', fluid and muscle twitches...
I just don't want to end up with severe pain, because I'm studying to become a professor and wouldn't want my occupation to be affected...
Any other advice or suggestions from you guys would be great. Thanks for the responses.