In the early stages of pregnancy, there is no stomach pain, but if there is a dull pain in the stomach, most of the cases are considered to be pre-miscarriage. At this time, you must go to the hospital to do relevant examination and treat the symptoms. If the embryo is developing well, the blood HCG will double every other day and the progesterone will gradually rise, which means the embryo is developing well and there will be no stomach pain at this time. If there is stomach pain, most of the cases are considered to be pre-eclampsia, which can be judged indirectly by the doubling of blood HCG every other day and the rise of progesterone. If there is a drop in progesterone, this is the time to keep the pregnancy, symptomatic treatment and absolute bed rest. After a period of symptomatic treatment, see if the dull pain in the stomach can be relieved, the stomach pain is considered to have preterm abortion.