Maybe seeing a regular MD and starting medication would help, while you wait 12-16 weeks for your appt.
Medication can help relieve your symptoms and give a chance to think rationally.
I suffer from severe anxiety/panic and well aware of what the mind can do. Medication may be just a band aid, but it can help you calm down and feel a bit better.
Please give it some thought, you don't have to feel this way everyday.