Depression or laziness??

This morning it was sooo hard to get out of bed. Like my limbs genuinely felt like they couldn’t move, they were bricks. I ended up being 1.5 hours late to work. When I got there I was smiling and saying hi to everyone but I feel so drained.

Is this depression or am I just tired from not getting enough sleep? I mean I haven’t really been getting 8 hours a night