I am all too familiar with the panic attacks etc when I was going through my sitch early on. They are relentless. I’m glad you are seeing your doctor, hopefully he/she can give you something to take the edge off.
In the meantime, what are you doing to help with your anxiety? For me, I turned to the gym and started working out very hard. It helped with the anxiety and I also got in really good shape.
I also started IC which helped as well.
So sorry you are struggling. You will survive this.