That's the thing with panic attacks, they don't need a trigger. They just happen. That all sounds like panic attack symptoms except the cheek thing. Does it hurt in like your skin or is it more like in your jaw/bone? It might be dental if that's the case. And that pain can come and go, so it could be a coincidence. You know your body though, and anxiety/panic attacks can do crazy stuff!

I have panic attacks every night, i can be fine (just like you) and just BAM..Panic attack. Can't breath, can't swallow, feel sick, etc. I start to fear it happening as it gets later in the day, which of course, just makes it even worse.