Doctorate program symptoms and conditions

I have been on Lamictal 200mg per day for about 3 years along with Wellbutrin and Lexapro. Over the past few months, I have noticed numerous things happening to my mind and body and finally put the pieces of the puzzle together...side effects of Lamictal. Short term memory is gone which is the scariest. Difficulty putting coherent sentences together. Fumbling for words. Spelling is awful. Heaviness in legs. Trouble writing. Inability to communicate well with the spoken word. Slow thought process. Shakiness - Hands shaking - Tremor. Speech disturbance. Weight gain. Coordination problems. Dry mouth is worse. Back pain. Increase in sweating including night sweats. Irritability. Impaired concentration. Forgetfulness.

This is so embarrassing when I'm in meetings. I start to sweat and can't seem to get my words out. I am also in a master's program and it is getting really hard to concentrate enough to write the papers. I am starting a doctorate program in Aug. which will not happen if these side effects don't go away. I called my doctor on Friday and we cut the dose in half and evaluate in 2 weeks. I want off of this drug! I need all of the symptoms described above to go away, especially my short term memory loss. I am very scared at this point.