Wellbutrin Frequent Awakenings, Extreme Tiredness, Depression Anxiety, Depressive State, Depressive Episode

I've been on Wellbutrin over two months now for depression/anxiety related to a recent job loss. At first I seemed more energized (150mg 2x daily). But that didn't last long. I slowly started sinking back into my depressive state. They upped the dose to 200mg 2x daily. My complaints are extreme tiredness during the day, like I've been up all night, muddled, foggy, thinking, and inability to concentrate and stay with a task. All are not good behaviors condusive to a successful job search. I'm in slow motion.

A few nights a week I feel reved up at bed time and have trouble falling asleep. When I do fall asleep, it is a light, tossing and turning type of sleep with frequent awakenings. I wake up DEAD tired in the morning. By 8:00 at night all I can think about is going to sleep. What I'm trying to figure out is whether these are side effects that others have experienced on Wellbutrin, or whether they are symptoms of my depression that are not being treated by the Wellbutrin.

I was on Wellbutrin two times prior to this depressive episode, about 5 years ago, and about 10 years ago, and I don't remember feeling so tired or spacy when taking it. I don't want to stop if I just need to give this a little more time to work itself out. I take one 200mg pill at 8:00AM and the other at 6:00PM. But if this is worsening the symptoms of depression (tiredness is a killer) rather than helping them, then I need to pursue another route of treatment. Anybody having similar experiences?