Wellbutrin and lack of sleep

I am going through my CDL training, and am having a lack of sleep due to studying, but for all I know some of the things happening could be because I've been on Wellbutrin for about two weeks.

-Eyes swollen feeling
-Memory loss
-Rapid heart beat
-Increased my body temperature. I'm usually cold all the time. Now I'm heated well.

This is the 3rd time I have been on Wellbutrin. Once in 1999, then in 2004, and just started taking it again 3 months ago. The first two times I took it I had joint pain and a lot of muscle inflammation. This go around is different... Just recently, within the past few weeks, I started breaking out with hives, after taking it with no problems for three months! Started on my head and progressively got worse. I break out all over my body, head, legs, back, hands, etc. For some reason it seems to happen more frequently when I lay down in my bed to go to sleep (weird!) One other scary side affect is, I frequently stop breathing when I start to fall asleep, and wake up gasping for air. Has anyone else experienced this?
Since I had never experienced problems with hives the first few times I was on Wellbutrin, I didn't think it was the medication causing the hives. So, I cut my dose in half (50mg/day). The hives didn't go away, so I stopped taking it all together 3 days ago, but still continue to get hives. Does anyone know how long it takes to get it out of your system?

I am trying to wean myself off of Wellbutrin. Was taking 300mg (150 2x day) for about 2 years. After my sister had a seisure, I immediately cut my dosage in half and did that for about 3 weeks. Felt fine. Cut that in half for about 2 weeks and felf fine. Today (Sept 3, 07) is my first full week off the medication. I've had the text book withdrawal symptoms; lack of sleep, light headed, tingling in arms and legs, headaches, and occassional shaking.
Any idea how long symptoms will last, and is there any thing to do, naturally, that will help.

I have been diagnosed with ADHD,I've been on Wellbutrin SR, for one week now and started with 150mg, This week I am to double my dose, I feel light headed all the time, a little lack of sleep and small headaches that move around, fade in and out alot.also Heart Pains now and then too. I've had alcohol and my Dr. said it would be o.k in moderation, when the instructions say not to, So i'll stop. I don't want a seizure. I'm in school and i'm not sure I should be testing this now, as i HAVE TO PASS, all i need is help with attention, not really depression, my question is should I be on this now or at all, what can i expect in the future, and are holistic alternatives good or better? Is it safe to excersize or will i get a heart attack at 23---PLEASE ANY INFO IS APPRECIATED.