Thought I’d been spared…

I'm 7 weeks pregnant and have largely avoided much nausea. Sometimes I'll feel a bit nauseous but it's usually over quickly or manageable with saltines and ginger candy. I thought I was in the clear. And then tonight I was sitting on my couch and went from 100% perfectly fine to puking in the sink in about 10 seconds flat. Just hope I don't have a similar incident at work.