No energy and low cortisol levels

I was just wondering if any one else has had problems with having a low cortisol level. At two year post op my PCP diagnosed me with something called Addison's Disease. My blood pressure was only 70/40 and I had almost no cortisol in my body. I just assumed that my low energy level and was from being dehydrated and not getting my protein in. I've been told that due to the constant infection within my abdomin my adrenal glands have now been destroyed. I've had a total of 8 surgeries since my open RNY in 12/02. I had to go on steroids and have put on 55 pounds. My dosage is now low enough that I have stopped gaining, but I am so frustrated!!!!