Update: I have a break from school (a week long) coming up and I plan on getting the dental work done during that time. Both of my fillings are on the molars, and a root canal has been done on one of them (performed the same time when I got the fillings). I have a plethora of symptoms that have appeared since the initial dental work, here are just a few.

Mental: OCD
Inability to sleep at night
Severe depression (not depressed now, but was completely depressed for 6 months after a month the dental work was done)
Terrible short term memory (only recently developed this, memory used to be unbelievably good)

Physical: Cholinergic Urticaria
Muscle weakness (I used to be very athletic, but my muscle are easily fatigued now and weak)
Joint pain
Constantly tired, never wake up to alarm clocks

Anyway, I have discussed the issue with my parents and we're trying to work out what to do. They're thinking having the root canaled tooth pulled (minimize exposure to any more mercury) and replaced (and possibly the other tooth as well.) I'm thinking about going the NYU dental school clinic since the procedures would be very expensive. I don't think I'm going to detox after the procedure considering since I haven't had these fillings for a very long time, but I'll definitely consider your opinions.