Quitting my job?😪

My nausea is horrible.. I throw up at least twice a day. I’m 7 weeks 4 days. My job doesn’t let me sit, or stand in one place. I work at a restaurant so I’m around greasy smells and food all of the time. Mostly fish. We don’t have an employee bathroom. I’ve gone close to vomiting at work so many times. I feel like I’m depressed I just can’t take it anymore. Especially with how I’m being treated. What should I do?