Tummy pain after ovulation injection is likely to occur because there are multiple follicles growing and developing in the ovaries while the medication is being administered, resulting in increased local pressure and tension in the ovaries, so tummy pain can occur. In addition, this condition should also be alerted to whether it is caused by ovarian hyperstimulation, which causes multiple follicles to grow and develop while the medication is being administered, so it can cause a large increase in estrogen in the body, which may result in edema, ascites or corresponding symptoms such as low urine, nausea, chest tightness, etc. It is recommended to go to the hospital for examination in a timely manner. If there are symptoms of ovarian hyperstimulation, the milder ones can be relieved by rest. If it is more serious, you must be hospitalized to give the appropriate treatment to achieve healing.