I messed up with my transform manipulation tool settings I didn't have any problems earlier, until I noticed that when I drag some vertices, with the Transformation Manipulators, it doesn't look aligned anymore. 



So, instead of dragging the vertices to a straight in front it goes the other side.



I'm new to Blender and I didn't know what I accidentally clicked to cause this.
Set the orientation back to global and you should be fine. I rarely ever use widgets, though.