Method of contraception —Using vaseline beforehand, and urinating and using soap-and-water immediately after each connection, is a fairly safe way of avoiding conception and infection. But the vaseline needs to be inserted fairly high up—if possible over the mouth of the womb, and the subsequent washing needs to be very thoroughly done (internally and externally). This method is commonly used by Continental women, but it is not entirely reliable by itself.
Read More on Contraception