I have discomfort, it hurts the left upper part of the body and the lower part of the back, I have been vomiting and going to the bathroom a lot. What happens to me?

No mention if " you are going to the bathroom often," referring to urinate and / or defecate , which is important information. If you have abdominal and back pain, nausea , vomiting and diarrhea pain , the most likely cause of your symptoms is an acute viral gastroenteritis ( "stomach flu" ) . Food poisoning cause similar symptoms. In most cases , viral gastroenteritis and food poisoning usually end up disappearing after a few days , and one tends to overcome these diseases at home - although it can feel a little weak for a period of a week to 10 days . Now, if you are experiencing pain in the back and sides , vomiting, and frequent urination , you may have a kidney stone or pyelonephritis ( kidney infection ) . These conditions should be treated in a medical setting , go to your nearest emergency room. I hope things go better and because it made her question a week ago.