I've been feeling sick these days. What's going on?

These days always nausea may be related to pregnancy, acute gastroenteritis, encephalitis and other factors, as follows:

1, pregnancy: if the patient these days always nausea, and the presence of menstrual cramps delayed, then consider pregnancy caused by early pregnancy reaction.

2, acute gastroenteritis: acute gastroenteritis and eating contaminated food by bacteria, eating raw and cold stimulation food and other factors, patients can appear nausea, vomiting, abdominal pain and other gastrointestinal discomfort symptoms.

3, encephalitis: brain parenchyma infected with viruses, bacteria and other pathogenic microorganisms, causing intracranial pressure increased, patients can appear nausea, vomiting and other symptoms.