Did you eat something you're allergic to?

Maybe it's a side effect from taking medication. Taking medication can make an episodic problem a chronic one if there is prolonged psychiatric drug use. (Because psychiatric medications were never meant to be used in the long-term)

It is starting to sound like a relapse to me. I think the lack of sleep you've had in the past month is attributing to this weird mood state. I would record your sleep and mood state for the next few days. If you notice your sleep is continuing to reduce, then it probably means you should see a doctor. I am not saying that you should go back to psychiatric medications, but I am saying you need to get sleep. If it means taking a sleep medication for a week to reset your sleep, do it. You have been doing great, and been a huge inspiration to me! I want to see you succeed and sometimes it takes a little extra help to get there.