hey bro,
I get PN from a head injury some time back. It doesn't get as bad as yours sounds, but I have other symptoms to make up for it

First, maybe its time to contact a therapist or psychiatrist before your depression becomes worse. Nip it in the bud, so to say.

Second, I don't think your wife would call you at all during the day if she weren't truly concerned, The question she is asking is routine and my girlfriend asks me that too every day.

Also, give this doctor another chance and then Get a new doctor if you are unhappy with this one. Keep looking until you are satisfied . It's your only choice. I have found two good ones recently after eight years, a neurologist and a psych...you have to keep searching if your current doctor isn't helping. the right doctor can make a HUGE difference.

Hang in there bro