I lived at an apartment in Bangkok

I lived at an apartment in Bangkok with my roommate, her name's Ann. One night on the last month while i slept in my room. I dreamed and in my dream i saw black shadow resemble a human. It hold and tow my body down from the bed. I tried to call Ann come help me but she did not hears. Suddenly i woke up. I was found i slept on the bed as usual. I told Ann and my friends that in the morning next day and they said i should go to make merit at temple.