Since my concussion in October, I've struggled with severe depression/crying spells/panic attacks. I have no history of depression or anxiety before my concussion. I'm now on 75 mg of Zoloft which is a pretty low dosage (max=200 mg). The depression is very subtle now and the panic attacks have almost completely subsided (with the exception of one during a relapse last week). Of course the progress is also from my brain healing, but I'm very pleased with the results.

I've also been taking a B-complex vitamin, omega 3 Fish Oil, and a multivitamin for about 6 months now. I've never been one who wanted to rely on medicine. You seem hesitant as well. I can't see the harm in giving it a try. If it doesn't benefit you, you can always decide to not take it and taper off of it.

And Mark's right about the GP and Family Med doctors... Your best bet is finding a neuropsychiatrist or concussion specialist. Good luck!