I am a 64 yr old white male. PTSD, panic dis-order, OCD, I have a medical procedure coming up and I'm scared and having panic attacks so much, I've made myself sick, physically. I'm taking clonazepam 6 mg. a day but they don't do too much. I'm afraid if I cancell the Dr. will drop me as they don't seem to understand. Advice needed, PLEASE.