I get dizzy, vomit, feel weak, have a stomachache, and I can't stand up.

This condition may be caused by excessive blood loss, blood stasis, menstrual syndrome, intestinal spasms, etc. It is recommended to go to the hospital for examination. If anemia occurs, iron treatment is required under the guidance of a doctor. When the patient has severe abdominal pain, it is necessary to follow the doctor's advice to relieve pain with painkillers.