Pregnancy with stomach pain and vaginal bleeding may have the following conditions: The first condition is to see if there is a preterm miscarriage. First of all, you should go to the hospital for an ultrasound to make sure that the pregnancy is intrauterine and to see if the gestational sac is well developed and if there is any fetal heart tube pulsation. If the gestational sac is normal and there is vaginal bleeding, it is a pre-eclampsia miscarriage and needs to be treated. In the second case, it is necessary to exclude whether there is ectopic pregnancy, because ectopic pregnancy with stomach pain and bleeding can cause intra-abdominal hemorrhage, which can lead to shock and can seriously affect life. Therefore, if you have stomach pain when you are pregnant, you must go to the hospital for a checkup to rule out ectopic pregnancy. In the third case, it is necessary to exclude any superfluous organisms on the cervix. If some pregnant women have superfluous organisms on the cervix, especially cervical polyps, they may also cause abnormal bleeding.