From what it sounds like is the Wellbutrin is not working out for you. Sometimes it takes multiple trys at meds to hit the right one. It seems like you have gone through a few, and i've been through some of those as well. The one that did the trick is one i never heard of, called Remeron. Not saying this would be the drug for you, but saying that if you feel the way you do you are either overmedicated, or wellbutrin is not helping.
I agree with hopeisreal. You may already be doing this, but if not, please try and find a therapist to talk to. Most of all be kind to yourself. This stuff is very difficult to go through, and the best thing you can do for yourself is keep being optimistic, drink lots of fluids, and talk about whats going on. I think that is pretty cool you were able to post on here, it shows that you really want to get better. You'd be surprised at the number of people that are scared or uncomfortable to post. You're not only helping yourself but others by posting about you experience.
Hang in there man, i know its rough. It sounds like you need to switch meds, but you need to do that with a doctor to make sure you are covered during any transitions. And, just from my own experience, try not to miss a dose. Even if you feel like crap, the back and forth of chemicals cant be good for you.
take care and keep us posted. Thanks for writing!
Anxiety, Panic Disorder, and Depression.
"We work on ourselves in order to help others, but also we help others in order to work on ourselves."
- Pema Chodron