Lgarza,
it sounds like the disc is slipping out of place. And yes, that is similar to how my tmj started 26 years ago. Do not pop your jaw if you can help it. Use a lot of moist heat and/or ice. Eat a soft or liquid diet for the next couple of weeks or so and try not to open your mouth wide for any purpose (watch out for yawning). No gum chewing.
Ibuprofen tends to be the best pain reliever that I have found. If possible, see if your doctor will prescribe a month's worth of valium to take just before going to bed.
Relax somehow. You need to get the tm joint to relax and accept the disc back where it should be so the muscles will stop going into spasms. The position of your head and shoulders is extremely important. If you are jutting your jaw forward (to drive or surf the internet, etc.) *** stop ***. Your shoulders should be back and down with your head directly on center, not forward. And your chin should be down (but not too far down). Most of us have a tendency to hold our heads forward and up. Bad. Reduce your stress any way possible. (i changed my job recently from a high stress position to a low stress one and it helped dramatically.)
i threw a lot at you just now. I hope and pray that as you work at relaxation and don't use your mouth very much (including talking), that you will get the relief you need. (do not go the braces or surgery route.) I pray that you will feel better.
God bless...
Carol