when semen dribbles out, theres still some clinging to the walls of her vagina. to illustrate this effect, fill a soda bottle with cooking oil. pour out the oil. there's a bunch still clinging to the bottle, right? right.
sperm are pretty good swimmers, and there are currents inside your girl's reproductive tract that make it EASIER for sperm to swim in. they help the sperm along. After all, the human body is designed to reproduce.
seriously, we strongly suggest backing up birth control pills with condoms. nothing is perfect birth control, and things do fail. but having birth control PLUS condom makes the chances of failure really really small, as in a decimal followed by several zeroes.
LA County STD Hotline 1.800.758.0880
Toll free STD and clinic information, and condoms sent to your door for Los Angeles County residents.
1 in 3 sexually active people will be exposed to a STD by the time they turn 24.