You might want to consider seeing a regular doctor to rule things out.
I wish I knew how to fix waking up panicked. For myself, I have been sleeping so peaceful, I don't sleep any longer, 3-5 hours on a good night but I so often wake up extremely anxious.
There are supplements that are supposed to help you sleep and have a calm sleep. Maybe something like that?
__________________
PDD with Psychotic Features, GAD, Cluster C personality traits - No meds, except a weekly ketamine infusion