You mentioned Omega 3 Fish oil as something you used to help ease your symptoms. I have to mention that my doctor put me on fish oil and told me a couple of things: First, the bottle says to only take one a day, he told me to take three. Second, the three fish oils a day is not for mental health but overall health and well being. Third, if he wanted to treat my depression with fish oil, I'd be taking at least five a day.
I just mention this because taking one a day isn't really going to do anything for any mental health symptoms, except maybe give you a placebo affect.
Which brings me to another point my doctor made... Placebo affect is extremely important with mental health medications. If you don't think they're going to work, they won't. They may help a little, but you won't see any great improvements.
You really should try to keep seeing a doctor; I understand how frustrating it is. It is simply a process that takes time, trial and error, and a good therapist and pdoc.
I'm also curious why you've had so many therapists in the past years. I went through a period where I had a lot too, and I know that definitely didn't help me get any better. I finally found both a therapist and pdoc that I loved, but unfortunately, I moved, and have not been able to find good replacements for either of them...
Sorry if I babbled too much. Good luck! Feel free to come back and vent whenever you need to!