Hi, and yes those were definite signs of a Panic attack and one should really be on soemthing regularily for that such as Celexa, Paxil, Zoloft, Luvox, Effexor-XR, or any other SSRI medication on a on going basis in my opinion.
Taking Ativan is not going to solve any problems as it is very attictive and masks the brains ability to learn to cope where as SSRI medication nallows you to seek therapy for it and at the same time take them and keep things under control while your brain learns.
Benzos with the eceptionof Clonazapam are not the route as far as I'm concerned.

Talk to your doctor about an SSRI medication such as any of the ones I mentioned.
Good luck.
Nick