Try chewing gum... That was a life saver for me!
My last pregnancy was like that, I joked that whoever named it 'morning' sickness had it wrong because it was really 'all the damn time' sickness for me! Just try to find something that works. For me it was anything sour, and making sure that I didn't have an empty stomach because it seemed to be soo much worse when I got hungry. And then it would be a never ending cycle because I'd get sick and not want to eat and it would go on and on
I had 2 weeks where I was like that around 14 or 15 weeks. Just make sure you keep hydrated. Good luck. Hope it passes soon.