LD interrupted by imaginary hospitals?

So I got a LD last night. I noticed i was down town PB and i realized it was a dream. So i wandered and found myself in an emergancy room hospital and i said let me go im dreaming and they said no you were walking around outside at night. so that interrupted my LD i still knew i was dreaming but was trapped in the hospital setting so i woke up/shifted into a regular dream. does this happen to any of you?