Turned nightmare

You are a collage student who saved enough money to rent an apartment. Everything seemed fine until you woke up in 3 a.m. paralyzed. At first you freak out a bit but soon realize you are probably in sleep paralysis so you thought of waiting this one out till morning until you saw a floating canine skull beneath your chest. A shadow came out from the skull. Making a large muscular body. Leaning towards you in bed as your sleep paralysis demon said to you sheepishy. " I-It's been a while.... "