grandmas house

Had a dream where I was at my grandmas house; I was in the living room and she was in the kitchen. I went into the kitchen, and she looked somewhat younger. I then knew I was dreaming or something and knew the person wasnt really my grandma. I went close to her and started screaming over and over. I was screaming aloud in real-life, my fiance woke me up because I was screaming very loud over and over.