Does anyone have any success stories with dh having low motility? was anyone out there with the same issue and got pregnant naturally? May 22, - Many factors can affect male fertility. If the sperm is otherwise healthy, pregnancy with low sperm motility can occur. Using a reproductive technology such as in vitro fertilization or intrauterine insemination (IUI) can help increase the chance of pregnancy.Sperm motility · Causes · Diagnosis.