Thank you for your question, and I hope that we can help you to feel better. The best thing to do is to discuss your symptoms with your doctor
. The thyroid is a gland that has many effects on many different parts of the body. It is also easy to test whether or not it is functioning appropriately, and so for all of these reasons it is often one of the first thing that primary care doctors
will check when a patient presents with vague symptoms such as fatigue, memory loss, and weight gain, among others. Once the tests have been ordered, it is important to sort through them to make sure that you are appropriately being treated or regulated, and it is usually necessary to have your primary care doctor or even an endocrinologist
help you with this as there are many factors that can play into the interpretation of your labs. Adrenal insufficiency is a relatively rare condition, and it would be unusual for that to be the cause of your symptoms unless there is more to your health history than what you have included in your question. That being said, there are many potential causes and interpretations, and I would advise you to discuss your symptoms and question with your doctor.