Can not keep anything down today. threw up three times. first two times it was water the third it was soup. what should i do to calm my upset stomach?

Vomiting: it is important to keep hydrated ,dehydration worsens vomiting and makes you weaker. If you can't keep any liquids down even water( not just a sip but a cup) go to ER /urgent care they can give you medicine -phenergan/ Zofran (ondansetron) that treats nausea so you can keep water down. Also check HCG, or may be gastroenteritis or if severe abdominal pain pancreatitis, gastritis.gb. f/u/ with ER/ urgent care