I pulled an all nighter. can being really tired trigger joint pain in someone with lupus? even if i didn't do anything too physically demanding?

Yes: Lack of sleep increases inflammation and can, indeed, trigger a lupus flare-up. Try to get back to proper sleeping asap and ask your doctor for help if this is difficult or does not bring relief in a short time. Good sleep hygiene is a really important factor in your management of the condition. I'm glad you asked. It will be okay once you're back on track. See comments for a good link to info.