Strange nausea last night?
So last night around 11:15 or so I started feeling kind of nauseous, then not long after it hit me and all of a sudden I felt really sick. I went to the bathroom, but that seemed to make it worse. I sat up for a while, trying to calm myself with deep breathing, and I sucked on some mint. I thought for sure at any time I would throw up. It was a while later that I started feeling gradually feeling better. At 11:45, I went and layed back down on the couch, and half fell asleep. A little after midnight, I felt fine enough to go to bed, but still not completely normal. I slept ok, but it was a bit restful as I still felt slightly nauseous. At 4 am, I woke up feeling pretty sick again, so I went downstairs and layed on the couch. I felt pretty bad, not as bad as the first time but still thought I might throw up. Then I felt better; by that time I felt pretty much normal, went back to bed, slept fine, and just got up a little while ago. I no longer feel nauseous, I've eaten something, I'm now just tired from the lack of sleep. Anyway, I found this whole episode very strange, because even though I felt horrible I never got sick, and for hours it lingerered, then came back again strongly, and now it's gone. Any idea what this could have been?
Also-I had a headache and chills, but no fever