In my experience with anxiety, at times I would also wake up with a full fledged panic attack. I also had trouble trying to fall asleep as well probably because I didn't have as many distractions to keep me occupied like during the day. Are you in counseling right now for your anxiety? For me, just talking it over and learning about it, helped me confront and get long term relief from it.
Night time and sleep is when 9/10 of my anxiety and panic attacks occur, so yes I know exactly how you feel. I constantly fear I'm having a heart attack. It's awful. I struggle with this all of the time.