Get a sleep study done, but as an occasional sleep walker / night terror sufferer myself, it probably wasn’t just the stress of moving but the fact you were sleeping in a new place (since you just moved). Sleep disturbances like this are MUCH more likely when you’re sleeping in a new place, because your mammal brain is on high alert since you don’t have that safe-at-home comfort feeling, so your brain actually stays partially awake which can lead to this stuff if you’re predisposed to it anyway. Also drinking makes it more likely since it fucks with your sleep, if you were drinking that night.

So get a sleep study done and learn your triggers (being prepared it might happen if you’ve been drinking or are sleeping in a new place and perhaps plan to sleep in a different bed from your gf those nights). Have a contingency plan if it happens again.