Sounds like Norwalk virus. And yes, it can be NASTY! Make sure you aren't getting dehydrated... if you pinch up a fold of skin on the back of your forearm and it doesn't immediately snap back into place, it's time to get medical help.
You can try sipping ginger tea, ginger ale (if you can find a brand that actually contains real ginger, it's better... ginger is a proven anti-nausea remedy), or something like boullion. Take ONE sip, then lie down and rest, and let it settle. If you keep it down and don't have increased nausea in 20 minutes or so, take another sip.
If it is Norwalk, it's very contagious... use separate glasses, utensils, etc, and have hubby wipe down all faucet handles, toilet handle, seat and lid, and anything else you handle with a dilute bleach solution.
When I caught Norwalk at Christmas a couple years ago, we had a houseful of family. I went to bed on Christmas eve feeling fine, and woke up at midnight running for the bathroom. I was terrified I'd spread it to everyone, but I self isolated in our master bed/bath, hubby kept wiping things down, and no one- including hubby- caught it.
Praying you're feeling better soon! It's a really miserable bug.
Summerthyme