Ok so let’s talk about conception briefly. You cannot physically remove the sperm from a female’s reproductive parts (fallopian tubes) after ejaculation in an attempt to prevent pregnancy. Sperm travels very fast. Douching does not prevent pregnancy and can even push sperm further into the uterus. Hormonal birth control can prevent ovulation and thicken the cervical mucus to prevent pregnancy (sperm has to enter the cervix to get to the fallopian tubes). Condoms should be self-explanatory as a physical barrier.
Ok so let’s talk about conception briefly. You cannot physically remove the sperm from a female’s reproductive parts (fallopian tubes) after ejaculation in an attempt to prevent pregnancy. Sperm travels very fast. Douching does not prevent pregnancy and can even push sperm further into the uterus. Hormonal birth control can prevent ovulation and thicken the cervical mucus to prevent pregnancy (sperm has to enter the cervix to get to the fallopian tubes). Condoms should be self-explanatory as a physical barrier.
https://www.ucsfhealth.org/education/conception-how-it-works