We just got through a bout with something over the last 2 weeks. My wife had it first, about 3 days later I got it, and a day later my visiting MIL got it. Headache, nausea, vomiting, diarrhea, tiredness. 24-36 hours later, just fine. We have a slight indicator it may be related to Winter Vomiting Disease (a form of norovirus).
I do hope that whatever you're feeling, it passes quickly. 4951