You should have an ultrasound to check the size of the fluid in the uterus. If the fluid is physiological, it does not require special treatment and can be absorbed slowly and will not affect the growth of the fetus. If it is pathological, most of the time it is caused by inflammatory infection and needs to be treated with anti-inflammatory drugs in time. If there is pathological fluid in the uterine cavity, there will be pain in the stomach with a feeling of falling and swelling, which can be treated with oral cephalosporin or amoxicillin, and if oral medication is not effective, intravenous fluids can be used. During this period, it can also be treated with hot compresses or infrared radiation, and also by rectal instillation of drugs, which are absorbed through the rectal mucosa and can also achieve good therapeutic results.