Really scary, weird, twisted and disturbing movies.?

Like Eden Lake, Dead End, I Spit on Your Grave, The Cube, The Blair Witch Project and The Devil's Rejects? I like movies that seem to be real. That make your stomach and head hurt. And your pulse going fast and your hands sweating. If you know any please let me know. Anything Weird, sick, twisted and disturbing would be awesome. Thanks. P.S. only English.