Bex, I can empathize.
I'm 42 now and when I was 18 had my first panic attack. They got so bad, I was housebound for a year by the time I was 20. My parents got me into therapy where I stayed for 4 yrs (summers off) and then when I was 30 ,was in a special anxiety clinic for 2 yrs and neither the therapy or the clinic did a thing to help.
I worked hard and got out of the shell. I didn't use drugs, but sheer will.

I've been sick with lyme or whatever illness is plaguing my body for a long time. I'm not sure if the anxiety is caused from the illness, but I know it's one of the symptoms that can be controlled with exposure. It doesn't mean it's going to go away, but it can be controlled.
I still get major panic and anxiety, but I stopped letting it stop me,

I went from being housebound for an entire yr, and not driving anymore, to not ever seeing friends to getting a great job, joining a gym, driving all over (even on 15 hr car rides alone) and becoming "normal" again.
Which by the way, exercise controlled a lot of my panic

It took me a long time, but with enough exposue I was able to get functional again.

Since taking abx for lyme, My anxiety has been A LOT worse and since being home sick, my agoraphobia has been coming back a little...but the trick is to keep moving.
Sharks will die if they stop, we need to apply the same theory.

I know how much panic can control you, but you can't blame it on the illness in order to get better. You need to expose yourself.

Not judging you by the way, but i know how you feel and what hepled me.