DISCLAIMER: I am not using this as a substitute for medical advice. I simply want to be an informed patient, and one way of doing that is to pick others' brains.

I assure you, I'm making an appointment with my PCP as soon as possible.
First and foremost, sorry for yet another, "undiagnosed, here are my problems, help a sister out" post.
I have endometriosis and had laparoscopic surgery a few months ago. I assumed that most of my woes were related to the autoimmune hell that this disease is comprised of, but a loved one keeps insisting I pursue the help of an endocrinologist as I still have issues with the following:
- Regular dizzyness, particularly upon going from kneeling/sitting to standing - sometimes I have to sit back down, as it feels like all the blood leaves my legs and head.
- Weakness.
- Extreme sweating. I've always been a sweaty person, but now my armpits literally drip when I'm sitting still.
- Chronic diarrhea. This improved after removing gluten from my diet, but now the problems are creeping back, which is coupled with...
- Sharp abdominal pains.
- Generalized muscle pain.
- Fatigue. Also improved a bit after surgery, but is creeping back in a nasty way. I could happily sleep 13 hours after doing virtually nothing in my day.
- Tanning in areas that barely ever see sun, particularly hips/knee-pits. The tips of my fingers are bronze all year round.
- I freaking love salt, you guys. No, really. I really, really love salt.
- Constant urination, but I also have interstitial cystitis which is notorious for the same thing.
That said, I looked over bloodwork results from before my last surgery when the aforementioned loved one mentioned my adrenal glands for possibly the millionth time. To my surprise, my aldosterone level was an underwhelming value of 2 - it likely flew right past me since all the other times I revisited the results were to double-check sex hormone levels. The blood was taken at 10am after traveling extensively to get to the clinic, so I obviously wasn't sedentary for the time prior to the test. I know chronic illness can also caught aldosterone levels to plummet, but that seems awfully low for the beginning of the day.
I'll be going to my PCP in the near future, and will bring this blood test and my list of issues. He's real gung-ho on bloodwork, so I assume he'll take a couple million vials of blood and send me to a specialist.
Anyway, could this be indicative of an adrenal issue? Is there anything else I should keep an eye out for in the meantime, or any particular testing I should request other than an ACTH Stimulation test?
Thanks, y'all.