Extreme morning sickness

I’m a little over 9 weeks and have had consistent nausea and occasional vomiting. However, starting at 5am today, I have thrown up 10 times in 4 hours and cannot keep anything down. I happen to have a doctors appointment this afternoon but I’m not sure if I can even make it. I feel super weak and exhausted. Has anyone else randomly had this happen to them? I thought maybe I had a stomach bug but it doesn’t really feel that way.