After male ligation, the woman may still be pregnant. There are several possibilities. First, the sperm has not completely disappeared after the operation, for example, the residual sperm has not been discharged completely. 2、 It is the self vas deferens that re forms the channel to make the vas deferens re open. 3、 It is possible that there is abnormal development and deformity of vas deferens. 4、 It was a surgical error, the ligaments were checked by mistake or the ligation line was too loose, resulting in recanalization of the vas deferens. You need to wear a condom within two months after the operation. It is recommended to go to the hospital for reexamination two months after the operation. If there is still sperm in semen, further examination and diagnosis should be made. If there is no sperm, you can no longer use other contraceptive methods.
