Is this just my imagination or not?? wondering....

Last nite, sy tidur mcm dlm jm 8 gitu..hmm..then, i woke up at 11.50 pm, kunun2 mau studylh tp sy mmg study pun, i opened my laptop n then study for animal physiology. Study till 4.00 am lh mcm tu, subuh sdh..then sy tidur blk lh, sy tidur dlm keadaan lampu terpasang & my laptop pun msh lg sdg on..sy bkn tidur bah time tu, just like tidur ayam2 ja.....not real sleepy jg dat time just mau rehat for a while after sdh hbs study kan.. but then, suddenly sy terdengar bunyi air kena kacau. when i looked on my table, i saw 1 plastic glass with a straw in it, dlm tu ada air yg sy tgk tu air tu mcm kena sedut tp x disedut pun, but i really saw air dlm glass tu kena kacau..but there's no 1 in my room except myself. i really saw it with my both eyes & i knew, i wasn't dreaming at all. but then, bila sy try mau bangun dr katil trust me, it was so really hard for me, bdn sy mengeras & susah btl mau bangun, then sudddenly i heard sum 1 knockin my door & sama jg sy try mau bangun & buka pintu but it still cannot...sy rasa bdn sy mcm kena himpit sumthing, but dat time my eyes were opened & i saw nothing on top of my body but like i said, susah mau bangun!!!! huhu....n then, i just ignored it n started praying, tapi dat time saya tidak pray pun, sy just ckp ' our father' & 'hail mary' saja..dat's all.....then after dat terus benda tu hilang, glass yg sy nampak di atas meja tu pun tiada, bunyi pintu bilik sy kena knocking pun tiada......soo....wat dis all about??? i'm wondering....sy x rasa tu imagination sy cos dat time happened kan, mata sy terbuka & nampak semuanya...conclusion??