Taking anti-depressants isn't going to make you un-concussed, but it can make your brain stop producing chemicals that make you think killing yourself is the best way to deal with being concussed. I don't know if you go back and read your past posts, but if you do you might note a bit of a contrast between how you're presenting yourself today vs. how you presented yourself a couple of weeks ago.

My thought was that buying a rifle was such a ludicrous solution to the break-in problem that the break-in issue could only possibly be a cover story for getting a gun to kill yourself.

In any case, if you are having highly unstable moods as your posts seem to suggest, having firearms in the house doesn't seem like the best idea.