Cold turkey seizures from lamictal/welbutrin?

In november of 2010 I had to go cold turkey off my meds because my healthcare provider got into it with the university of louisville physicians so my doctor became out of network and I was too busy to switch to another doctor. Please no comments about you should never go cold turkey, it was out of my control. Anyways these past 3 months I have had 4, what I can only describe as vertigo esque total loss of balance mixed with convulsions a la seizures. I was on lamictal for 3 years and welbutrin for 8 years. I know these can cause problems upon going off cold turkey and am desperately trying to determine what is wrong with me. Any answers would be greatly appreciated.