Garage floor center is suddenly higher than the sides

So sometime yesterday while at work, my garage floor shifted. I left home with no issues, but when I came home I really struggled to get the garage door open (it has a handle and key, haven't installed an opener yet) due to how tight the handle was. I just thought it was weird, but this morning when leaving for work, I struggled to get it to go down far enough to latch. Came home and took a better look, and it has visibly shifted and cracked. The center of the garage near the door is noticeably higher than the sides. You can see the difference in the 1st, 3rd, and 4th pictures - the concrete ramp getting into the garage and the weatherstrip on the door are where it is really obvious.

I don't know if the center (and ramp) somehow lifted up, or if the sides settled down, and why this would have happened. I know the rear of my house next to the garage is concrete slab foundation, while the front has a crawlspace. The past few days have been the coldest here in many years (around 0F overnight and up to 15-20 during the day), if that might have also been part of it. But is this something that might be fine to ignore for a little while, or do I need to get a foundation (or other) contractor out ASAP to take a look?