Often times when we start feeling better we stop doing the things that originally helped us, such as journaling. Its an easy thing to start doing again though :) I'm glad you were able to speak to a phychiatrist on the phone and hopefully he gave you a little reassurance.
As for the night time panic... it happens when you are really stressed out. Its happened to me during high anxiety times. I have awaken from a deep sleep confused and scared and in panic. Its temporary. Once you get your anxiety levels down you will sleep well again.
I know this probably isn't helpful at the moment, but everything that you have described in your posts are all common anxiety symptoms. Accepting that can be hard. Many others here, including myself, are dealing with the same thing.
Hopefully you are having a better day today! :) Take care of yourself and your little one :)
I am driven to overcome this anxiety not only for myself but for my two little boys!
Anything is possible if you put your mind to it!