If you have a regular period and have a period every 30 days, 3.5 months of pregnancy is equivalent to about 14 weeks of pregnancy. At this time, the placenta and amniotic fluid have been formed, and the pregnancy month is relatively large, so hospitalization is required to induce labor, and before inducing labor, a certificate of induced labor issued by the county family planning department is required; blood cell analysis, coagulation analysis, liver function, kidney function, virus eight, blood type, electrocardiogram and obstetric ultrasound are also required. The results of these tests are not abnormal and contraindications to induction of labor are ruled out before labor can be induced.