Is this normal?

It's the first week of my divorce and I'm seriously exhausted. I've been sleeping almost all day and night for the past three days. I'M NOT DEPRESSED. I know what that feels like, I'm not depressed. I'm just really f*cking tired. I hope this clears up soon, because I got sh*t to do, but damn this is wild. I think it's just me detoxing and getting back to myself, and finally letting go of all that unnecessary stress.