Blowjob itself does not affect pregnancy. Blowjob occurs mainly because the muscle tone of the pelvic floor decreases when the prenatal area used to press against the pelvic floor after delivery, so vaginal laxity occurs. Air easily enters and exits the vagina, resulting in a loud noise, clinically known as stridor. In some cases, this is due to the fact that thin women have less fat in the pelvic floor, so the vagina fits poorly, and air can get into the vagina, which can lead to vaginal blowouts. Clinically, this phenomenon can be avoided by gaining weight. Therefore, it will not affect the pregnancy. It is recommended to do post-partum lifting exercises to exercise the pelvic floor muscles. This will also prevent or improve the condition and prevent the possibility of uterine prolapse.