How long does Jet Lag last?

I have been an absolute zombie this week. I thought jet lag started immediately when you return, but mine got worse all week. I barely got home tonight for a nap. I was looking forward to going to the Art for Heaven's Sake opening, but was so tired I didn't really enjoy it. I did find a bracelet from my favorite jewelry maker. It just wasn't as fun looking around as usual.
Finally finished my bag from the Knit Wit water bottle sling pattern. I think it turned out pretty well. I've been working on the Intricate Stag Bag and a pair of socks. Looking forward to just lounging around this weekend.