Suddenly stopping lamotrigine for epilepsy?

I have epilepsy and have been taking lamotrigine for about 2 and a half months, since I was diagnosed. I ran out a few days ago, and my doctor is aware of this. I have a doctors appointment Monday to get my new pills, too. Since I stopped suddenly (yesterday) what are the side effects? I've been feeling really dizzy, just like I had when I had my first seizure. I've been feeling like this since last night.