The stomach pain and vaginal bleeding in early pregnancy can be due to fertilization of the egg or to abnormalities, and the treatment of stomach pain and bleeding caused by different reasons is different. 1.Fertilized egg implantation: If early intrauterine pregnancy is clear, stomach pain and blood may be caused by fertilized egg implantation at this time. During the process of fertilization, the fertilized egg will destroy the endometrium, and some pregnant women will experience slight lower abdominal pain and a small amount of vaginal bleeding, which mostly occurs 2-3 weeks after the formation of the fertilized egg and is a normal phenomenon. 2. Pre-eclampsia or miscarriage: If the hidden pain is long, gradually aggravated and accompanied by a little vaginal bleeding, it is mostly considered pre-eclampsia or miscarriage, and it is necessary to immediately go to the hospital to recheck blood HCG and early pregnancy ultrasound for clarification. 3, ectopic pregnancy: if intrauterine pregnancy is not clearly defined, the occurrence of stomach pain and vaginal bleeding needs to be alert to the possibility of ectopic pregnancy, such as tubal pregnancy, which often manifests as a long time, one side of the lower abdominal episodes, and the pain is gradually intense. In this case, immediate medical attention is needed because ectopic pregnancy progresses rapidly and can cause syncope and shock in case of rupture, which can be life-threatening. To sum up, if you have stomach pain and bleeding in the early stages of pregnancy, you should go to the hospital in time to clarify the cause for safety reasons, rather than carrying it at home to avoid ruptured ectopic pregnancy and life-threatening hemorrhage.