Can this be a Panic Attack?

I wake up while sleepng and cant breath. I can inhale but not exhale. Everytime it happens for some reason I run 2 the door without noticing? Weird?!? Its happened several times like at age 16 at home while watching tv, age 18 in cl, age 21 while asleep and last night while asleep Im now 22. It feels as though Im choking. Im just scared I will one day not be able to catch my breath and callapse while no one is around. I've been told it was an uncued panic attack.