To recap, I didn't drink at all or do any wild drugs or anything abnormal at all last night before I crashed. I was awoken early this morning by an awful feeling in my stomach. I could feel stuff slushing around inside of me making nasty squishing noises that were clearly audible from some distance. It wasn't painful, just very intense nausea. Because I was laying in bed exhausted and sick I didn't feel like giving in right away and rushing to the toilet, so I laid in bed a bit longer, resisting the urge to hurl by repositioning my body. No position seemed to work, not even the fetal, and soon I began to salivate heavily and I dashed to the bathroom. I barfed up a glass or so of gooey yellowish fluid that tasted like stomach acid, but no food or anything. Immediately after vomiting I felt 100% better. The nausea stopped, I got hungry, and I've felt fine since.