Hi Dominique,
First of all...welcome to the site
Besides calcium, all the things that tested low are steroid hormones which the adrenal glands are responsible for manufacturing. In women the adrenals are the main site of testosterone production (the testes have this role in men).
Since you have had your left adrenal gland removed your condition would be considered more than simply 'adrenal fatigue' and more akin to 'adrenal insufficiency'. Obviously, your body now needs to produce the same quantities of steroid hormones using only one adrenal gland, rather than two.
Hormone replacement therapy such as your DHEA supplements and testosterone cream would be the usual treatment. I would ask your doctor about vitamin D supplements as well however, as vitamin D (actually a steroid hormone) is increasingly being shown to have 9important roles in regulating everything from mood to immunity.
It is also important that your hormone levels are kept in the normal ranges and I would assume your doctor will be doing blood tests to check on this regularly?
Lifestyle advice and supplements recommended for adrenal fatigue may benefit you but you should talk to the doctor prescribing the hormones for you before you take anything else yourself.
Take care,
Maff