Thanks guys. I actually looked more into the corgi rescue here in the midwest, and they actually do fosters as well as adoptions. It looks like their process is pretty strict, you have to fill out an application and there's a waiting list and stuff. But when I'm ready, I could at least get on the waiting list. And I think I'd be an okay applicant - it sounds like they prefer experienced corgi people with a place where the dog can run around. I have a yard but it's not fenced - but, there is a large fenced off-leash dog park about a block from my house (Lily has been there approximately one zillion times, it's her favorite place). And obviously I'm an experienced corgi person! So yeah, I'll continue making Lily happy and comfortable (I just zoomed home on my lunch break to feed her and let her go potty and pet her and check up on her - she seems to be doing okay although she had to poo like 4 times in 30 minutes). And then when Lily goes and I've grieved and I'm ready, I think I'll fill out an application to at least foster if not adopt through the corgi rescue group. I've heard of "foster fails" as well and I do like the idea of fostering first, it's like taking a potential dog on a test drive.
Akgirl, my GI said that Addison's isn't a very common illness, it's fairly rare and some doctors (maybe most doctors?) haven't even heard of it. I just sort of lucked into the fact that my GI even thought of it. It is something you should probably bring up with your doctor - maybe print out some literature showing the symptoms of Addison's and how that correlates to your own symptoms. And for what it's worth, even though it was my GI's idea, I seem to recall that he wasn't able to order the blood test himself as that doesn't fall under the umbrella of GI illnesses (even though it can cause those symptoms). My primary care doc had to order the test. So check with your primary care doc.
As for steroids, I also had to ask for a trial of those. That was actually the straw that broke the camel's back. It was my first year of being ill, and I just got sicker and sicker and nobody could tell me what was wrong and the test results were coming back normal or inconclusive or negative. I was getting so scared and frustrated. I had a really horrendous night one night - I flared and that was the day that I decided to start counting how many bowel movements that I had. And I ended up being up all night going to the bathroom. I got a bit delirious around bathroom trip #30, and I lost count, but I went about 5 or 6 times after that, so I'm comfortable with saying that I had diarrhea about 35 times in a 24 hour period (that's still my record, I haven't beat it yet).
So I was exhausted and dehydrated and extremely fatigued and just plain feeling horrendous. I tried to get in to see my GI the day after that night but he was all booked up, so was my primary care doc. But the person on the phone said that another primary care doc in that same clinic had an opening, so I went to see that doctor. And he was absolutely horrible, worst doctor I've ever seen. He walked into the exam room, and without even saying hello or asking me what was going on, he announced, "You have IBS. And you look depressed. Would you like some Zoloft?" UM, seriously?! I "look" depressed? Maybe that's because I was pooping all night and didn't sleep and feel like I'm dying, I guess that would probably make anybody "look" depressed, but gah, how condescending and insulting.
That was it, when he said that, I was at my limit and something broke in my brain. I'm normally meek and shy but he turned me into someone else, someone much more assertive and confident. I put down my foot at that moment. I said very sternly, "No, I think I have IBD, and I would like to try prednisone." He hemmed and hawed and then he said he would like me to try a couple of IBS meds first, and then if they didn't work he'd be okay with me trying a short trial of a low dose of pred (5 days at 10 mg per day). I agreed to that. So I tried the IBS meds and they didn't do a thing for me. Then I tried pred, and it was like magic. I felt so great for those 5 days! I guess it's common to get "euphoria" as a side effect, especially the first time you're on pred, and I definitely got that side effect. I felt like a million bucks, I felt like bursting out into song and dance (I didn't, because I didn't think my co-workers would appreciate that, hah). And then, after the 5 days was up, my symptoms all came back with a vengeance and I felt worse than ever. I reported all of that back to my GI, and that's when he started taking me more seriously and treating me as though it is IBD - both my GI and GP agreed that pred works on inflammation, so obviously I have something inflammatory going on, and not IBS. So yeah, putting my foot down and demanding a pred trial ended up working really well for me. Obviously your experience may differ, but I think it is worth a try.
I know personally I can't eat after 6pm at all or I am up in the night feeling like I'm going to puke! 
