Hi Amy,
I did not have the same treatment you are having but I did have a panic attck and it is scary!!! I was in a meeting at work and had to leave. My fiancee took me to the hospital and they said I was fine. Now every time I go my oncologist I'm scared. I started seeing a therapist and that has helped me a lot. I'm sure you feel overwhelmed with doctor appointments and can't think about another one, but seeing therapist is the only thing that has helped me. I go every 2 weeks and I take Lexapro. They gave me Xanex and it did not help. Lexapro (and other meds) are taken daily and keep you on a even keel so you can cope. You should talk to your doc about it. It has been a miracle for me.