If it helps, I can sympathize. I suffer from depression and chronic daily migraines and we play merry go round with my medications constantly. I seem to be always taking something to stop the side effects for something else. My depression medication causes migraines and my migraine medication causes depression. Go figure!
My mom had similar stories about Wellbutrin and went off it. My mom and I take Celexa and find it works really well even though it's known to trigger migraines. It's a Seratonin Reuptake Inhibitor - there's another S in there but I can't remember what for, a side effect of the migraine medication :). My sister on the other hand takes Paxil and find it works because she suffers from anxiety more than depression. It's rather embarassing admit all of the women in my familly are on anti-depressants, but they do say it's heriditary. :)
Hope this helps a bit. Keep working on it and if you've lost faith in your doctor don't be afraid to switch or time to call in a specialist. Though I'm not a big fan of psychiatrists, this is their speciality.
Through out my battle with both depression and migraines I've learned that we're all different and there is a limit to what the doctor's know. If they're not good at extracting information from you and assessing your situation they end up playing trial and error.
Coquitlam55 (aka Nicky)
"The world is full of suffering, it is also full of overcoming it." --Helen Keller
I try and remember this each day I have a headache that I'm not sure I can overcome.