The DEA recently made some opiate derivative drugs (Vicodin -- hydrocodone, Oxycontin, etc.) Schedule II drugs which puts them on the heavy monitor list. The DEA then keeps a list of the doctor, the patient, and the frequency of the med. The list is then sent to the doctor for justification. So a lot doctors are worried about patients that are on high usage of pain killers. You won't see long term Rx's of those pain killers much anymore.
Benzos are often as addicting as opiates. I have been there. And the problem is they require increased dosages as time progresses with use. And if they are for panic attacks, often learning a breathing technique borrowed from meditation, will help as well as benzos. I recommend that technique highly. Lower your shoulders, breath in and out evenly, 8 counts in, 8 counts out (or whatever count you feel comfortable with) and empty your mind. Tell yourself you are OK. It's just a panic attack and no one is shooting.
Watch coming down from these drugs. You will often experience anxiety and depression, worse than the affliction itself. Panic attacks can be worse. Stay well nourished and hydrated (and exercised) and let the docs know if you are having heavy withdrawal problems. You might/will lose sleep. You might need meds for that, and most are fairly safe to use. Social anxiety (avoidance of crowds, not getting out, driving in high traffic) are common issues. Don't force them until you stabilize -- and you will. Don't give up.
Definitely seek a psych out. Not easy finding someone you are OK with. Talking things out relieves a lot of anxiety during a critical time.
Good luck. Keep us posted.