Hallow Dear, Pre-ejaculatory fluid, commonly known as precum does contain some sperms which are capable of impregnanting a woman even if it is deposited only at the vaginal opening. Unfortunately, the precum is deposited without the awareness and knowledge of man. If you are routinely having sex, then it is better to follow some reliable birth control method like pills, condom or intrauterine device. Then you can enjoy the sex to the fullest of its extent and pleasure. Further more, pull out method gives a lot of stress to both the partners and is likely to disturb the mental health. It is never a reliable method of birth control. Please shift to some reliable method. I hope this will guide you on the right path.