Brownish dark and cloudy urine sounds like a bromine dump. Having that toxic gunk in your system would be very disruptive to your head. Since salt works so well for you, you might consider taking salt daily, not as a push. I have used daily as much as 1-1/2 teaspoons of RealSalt, with a gallon of water, in my most needy times. You might not need that much (I don't right now), but consider figuring out a daily ration of salt and water so that there's continuous kidney flushing. Maybe it will help prevent another distressed situation.
At your doc's, if a chemistry panel is done, get a copy of your results if you don't already. Adrenal forums recommend serum sodium levels of about 142-144, and serum potassium levels of about 4.2-4.4.