No, it is not normal to throw light greenish yellow liquid.
This indicate that there is some problem somewhere and can be;
Gastritis with bile reflux
Anxiety and stress
Small intestinal problems and intestinal obstruction if the vomiting is persistent.
If this is once only get the following:
PPI or Ranitidine.
Antacid gel 3 hourly
If the throwing is persistent:
Get an X-ray in standing position and further tests like ultrasonography, and tests of blood, stool and urine; tests for liver function tests, urea and creatinine and others as may be needed
Clinical evaluation by a Doctor and investigations will solve your problems.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.