I’m going out to the edge of the plank here, but I have to give my feedback. You have done well noticing that there is a stable pattern to your experiences at night. Just because it is so tight a pattern leads me to think that you are having anxiety and depression. The bloating May be ca result os some air swallowing before or as you are waking up. This could be related to the air swallowing. Your CNS autonomic nervous system switches to “alert” and you become fully awake in a fight or flight situation. You aren’t crazy,but therapy and antidepressant would start to deal with this. Why are you so worried about it being “anxiety”? We all experience it . Be brave for yourself and visit a mental health professional.