I remember going in to have orthognathic jaw surgery. My lower jaw was half an inch longer than the upper so I had a huge under bite. They had to break both jaws in order to correct it, so I was wired shut for two weeks. I was actually pretty calm on my way to the hospital. I was 18. Ironically, it was my mom who caused me the most anxiety. I remember her saying, "it's gonna be alright honey, don't worry...you're going to be fine" (in that motherly comforting way). For some reason it made be feel like I needed to worry.
Anyways...that just came to mind. I have no idea what the hormone imbalances feel like...but double-jaw surgery absolutely sucked.
All the best to you!