Bug movie transformation

I know I am not crazy when I say that I found this clip a couple of months ago on this site. It is a horror movie with a female tf in it. Its not complete but the scene starts with a woman in some sort of cult surrounding and she grows a roach-like abdomen from between her legs. The clip was really grainy though so I can't give many details. The clip ended with some heavy set spanish man opening a door to find her. Does anyone have any idea what movie this is?