When I'm anxious I go through phases where once a week or so I'll wake up all sweaty and startled in the middle of the night. Usually I'm panting or breathing heavily and a lot of the times I have no memory of this in the morning. 
My partner is the one who will tell me i do this and is usually able to coax me back to bed. Once in a while I remember I do this as well especially if I do something strange like getting up from bed in a dazed state (which I sometimes do as well) 
I'm wondering if this is normal for other people with anxiety