I'm not a doctor but I am a biomedical engineer-in-training... And I've had type 1 diabetes for 12 years. Symptoms you had are pretty much like a low blood sugar, happens to people sometimes, sometimes people just have chronic low blood sugar, stuff like that. If it happens again I'd get it checked out and/or immediately eat/drink something with some sugar in it to see if that helps.
Just got back to school from Thanksgiving break, 3D printer is working again, bed wasn't sticky enough so I had to scrap an hour's worth of printing... But it works so that's good (last week it was falling apart whenever I tried to do something). Also took apart my laptop and blew out three years' worth of dust, much better now.