Hi there yes I used to and still do get this a lot and it always seems to happen in the same place or store.
My nurse told me how to control my breathing and believe it or not I used to carry little flash cards in my pocket that said things like DON'T WORRY, and NOTHINg BAD IS GOiNG TO HAPPEN. I laughed when it was suggested however its an idea that's simple but effective.
That's not to say I still don't get that dreaded anxiety panic attack feeling but it's nowhere near as bad as it used to be.
Take care
J