Hello @ryman, I think a better nights sleep may be key to a lot of different health problems. Have you ever done a sleep study to determine if you might have some sleep apnea problems? I've read that waking up with phlegm in your throat is a common problem and may need medical attention. It might be good to discuss with your doctor. I found some information that may be helpful to read.

Mucus and Phlegm: What to Do if You Have Too Much
-- https://health.clevelandclinic.org/mucus-and-phlegm-what-to-do-if-you-have-too-much/

There are some strategies you can use to help with anxiety. I found the following article in Psychology Today.

22 Quick Tips to Change Your Anxiety Forever
-- https://www.psychologytoday.com/us/blog/anxiety-zen/201405/22-quick-tips-change-your-anxiety-forever

I hope you can give us an update after your appointment.