Low sperm motility has no effect when you get pregnant. Low sperm motility is low on average. A low average means that some sperm have very low motility, but some sperm will have high motility. The sperm that can get pregnant are definitely sperm with good vitality, which means they are normal sperm. For each pregnancy, only one sperm with good vitality is needed to swim at the forefront and unite with the egg, so the sperm that can get pregnant are normal sperm and there is no obvious effect on the child after pregnancy. It is recommended to carry out the normal work of settling the pregnancy, drink more water during the pregnancy and be less in crowded places to avoid viral infections.