There are more reasons for left side stomach pain after coitus, such as adnexal inflammation, ovarian cyst tip torsion, luteal rupture and possible ectopic pregnancy. At this time need to be combined with the patient’s menstruation and other conditions to consider. If there has been a delay in menstruation in the future must be early pregnancy test, early pregnancy test suggests that positive suggests pregnancy. If the left side of the abdominal pain pain obvious and vaginal bleeding, should be alert to pregnancy-related abnormalities, such as ectopic pregnancy, preeclampsia and so on. If you are sure that you are not pregnant, and you have left-sided abdominal pain with increased secretions and odor after intercourse, you should consider the possibility of pelvic inflammatory disease and adnexal inflammation. If the abdominal pain is severe, there are ovarian cysts, torsion, corpus luteum rupture may be, according to ultrasound, gynecological internal diagnosis, blood hcg, blood routine and other test results, choose the appropriate symptomatic treatment.