only one sperm is needed to get you pregnant but if you are on the pill and consistently take it. and use condoms every time you are about as safe as you can be without being completely abstinent. if you are engaging in sexual play where your vagina is being exposed to any semen (even before ejaculation) you have a very small risk of pregnancy but remember that your birth control pills are very protective. not 100% but close.
can a little bit of sperm get you pregnant? . i am on the pill and we do use condoms before he ejaculates into me. we are both wondering if i can get pregnant this way. and yes i take the pill every day.