[im also not entirely sure whether it was a movie or a creepypasta]

Hi! would like to ask if anyone's familiar of this horror movie? an old friend from years back told me the plot wherein:

a guy was constantly woken up by knockings on his door but he doesnt know what makes this. so he consulted a medium and told him it was his girlfriend who died in an accident. if he want to help her pass over, he should offer him gift, lay out on his bed and hide (he hid under the bed). the medium kinda forgot to say that however she died (like what she looked like), will be the one he will see. he heard the knocking, turns out gf knocks on the floor and she crawls.