Anyone develop a fear of flying? Any tips for a flight coming up?

I'm flying from Birmingham to Philadelphia in two weeks, and I'm having anxiety about it.

It's weird because I've flown dozens of times in my life and never had issue.

Around three years ago, I developed claustrophobia, something else I had never had an issue with. I was standing in line for a ride at Disney and thought I needed to eat something because I was feeling uncomfortable. I had to leave the line to get some air. A little while later I realized that any confined or overcrowded space made me really uncomfortable.

After that, I started having anxiety issues. I couldn't complete an MRI after multiple attempts (despite having had two MRIs years ago with no issue). I can't ride in the car without driving. Being a passenger sends my anxiety through the roof. Even sometimes when I'm inside my house, I'll feel the need to go outside just to let my body know we're not trapped there.

I've never been an anxiety-riddled person. Ever. Never had claustrophobia. Never feared flying.

But I'm staring at this flight in a few weeks and wondering if I'm going to be the next "that motherfricker is not real!" viral video when I have an inevitable panic attack.