I Want Some Horror Movie Help?

Okay I'm not disturbed for wanting to watch it but I'm looking for a horror movie about a mother trying to kill her own babies coz of some mental problems I think and if I remember right the cover shows the mum in her PJ's holding a blooded knife in what looks to be a babies room that's covered in blood. I'm in a mood where I wanna watch a good horror, but name all the movies about a mum attempting to kill her children. I doubt its baby blues coz the cover is completely different