Help.....New to site and need direction?

I dont know how to begin or even deal with this. I have read some stuff about herbal help? I dont have insurance so going to the Dr for help is really out of the question at this point. But I need to do something. I feel like I am losing my mind, I lose whole conversations because I am distracted and cant even remember having them. I feel like my mind is swiss cheese, just full of holes. I thought that maybe I was getting dementia or Alzheimers.... but after checking and reading about them I do not believe that is it. I am 42 and it is really starting to affect my life now, it is driving my fiance crazy, she calls it "shiny things" which just makes it worse. I wind up not dealing with the issue at hand and just try to keep her from hurting or going nuts.....which just makes me feel like I am losing my mind even more. I dont understand whats going on, but after reading some on this site it gives me a little hope, at least hope that I wont end up in a home or institution in a few years. I am a carpenter and a and music i remember everything and stay focused all the time. At home I am not....any help?