Death Bed - horror movie

Looking for a movie that I thought was called Death Bed--it may have been an alternate title. It's not the infamous Deathbed from the '70s, this was in the 2000s I believe. It's also not any of the other ones on IMDb with that title, not the '02 or '09 ones.

The movie is about four friends who are investigating an old house or something and end up trapped in the bedroom on the bed while something is killing them off, I can't remember if it was the bed itself or not that was evil, haha. Any help?