I have adrenal fatigue and just had my baby. I had all of the same concerns as you.
I do not know if it will mask any of your tests. I do know that around 5 months or so into my pregnancy I noticed my adrenal fatigue improved. I wasn't really sensitive to noise, I wasn't really moody (from hypoglycemia), I was able to get a job for the first time in 3 years (husband was happy). I believe that a lot of people especially women have low progesterone with adrenal fatigue and I strongly believe my progesterone increased during this pregnancy. I had terrible morning sickness though so it was really rough. The morning sickness caused blood Sugar swings.
In the beginning of the pregnancy though I felt worse with dizziness.
I wish I had been able to continue my pantethine that Dr. Lam recommended for me to take a while back...but pregnancy would not allow it for the first 5 months and almost 6 because of bad morning sickness. I ended up rarely taking the vitamins my body so desperately needed ( and my baby) and had a c-section ( baby was breech) and my body did not handle it well, I ended up feeling terrible after surgery and thought I was going to die. I was sooo sensitive to noise I felt I would die sometimes if someone raised their voice around me, I could not raise my voice at anyone without feeling as if I would pass out immediately and die. ( I don't think I have met but a couple of people that have symptoms like mine at my worst).
I started taking my pantethine and within a week was feeling much better. I was taking Maca root too which really helps me combined with pantethine. And now a month and a half after surgery I feel really good! I was able to be around people normally and handle noise about 3 weeks post partum and just kept feeling better.
I also have been practicing urine therapy which I feel is vital and just as important as the pantethine in getting better for me. I notice a calming energy that I woudln't normally have without it.
Do a search on curezone for urine therapy and you will find a lot of people that it has helped. Also some here on the adrenal fatigue forum have tried it.
I pray for you to have a safe, and healthy pregnancy.