vomiting, sipping a bit of water, vomiting again (literally a few seconds after each sip, which was annoying, as everytime I vomited, I had to drink water so I wouldn't dehydrate, but everytime I drank it'd just come back up), then drifting back off to sleep involuntarily.
Anyway, woke up other day feeling brilliant, headache had gone, fuzziness had gone, the sick feeling had gone, the feeling of complete weakness and not being able to stay awake had gone.