Weird ridges that didn't show on the model or in slicer

No idea what could have happened here. This is supposed to be a straight walled box but it looks like the printed decided to add some ridges on it's own, but as soon as the big holes start, it goes back to straight walls. These pictures aren't the best but I'm the last one you can see what looks like a diagonal separation in the wall. Any help would be great cause I'm already 9 hours into this print and would like to have it by Wednesday lol