In mid-pregnancy, there are more cases of vague pain on the left side, mainly to exclude the possibility of gastroenteritis, the possibility of chronic stones, and also depends on the pregnancy situation. If there are any cysts, the most important thing is to make a preliminary judgment by ultrasound. If it is gastroenteritis, it may be due to unclean diet or cold stomach, many people will have diarrhea, and some people may even have vomiting symptoms, so you can pay attention to a light diet and rest. In the case of ovarian conditions, ultrasound can be used to make a more preliminary determination. Some people may also have gastritis, so pay attention to whether they have a history of stomach problems. You can’t rule out stones, which in most cases can also be captured by ultrasound.