How can you stop sperm coming out of the vagin?

To prevent sperm from entering the vagina during sexual intercourse, consider using barrier methods such as condoms, which also provide protection against sexually transmitted infections. Other options include using a diaphragm or cervical cap, which are placed inside the vagina before intercourse. Additionally, hormonal contraceptives can prevent ovulation and reduce the risk of pregnancy, though they do not stop sperm from entering. It's essential to consult with a healthcare provider to choose the most suitable method for your needs.