I wouldn't say I'm a particularly anxious person but I had my first baby this year and I've been experiencing weird episodes more frequently since her arrival.
I'll get a pain in my chest or head and then I automatically start panicking, then i start to go light headed and then usually get an extremely tight chest/back, then I just have to concentrate on not passing out. I feel horribly anxious during these episodes and afterwards I feel wiped out, light headed and like I just need to lie down. They're really scary.
Even after it passes, I still have a light head and tight chest and feel on edge for the rest of the day/evening!
Does this sound like panic attacks? 
Would love to hear anyone else's experience too