My question is: if you are religious, why are you having sex before marriage? You religion doesn't believe in abortions, but do they believe in sex before marriage?
Do not ever leave birth control up to a man - ever! Go get your own condoms (they are cheaper than a baby) and make your partner wear them every time you have sex.
No glove, no love!
This will protect you in more ways than one. People automatically think 'pregnancy' when they think of unprotected sex. What about sexually transmitted diseases? They can stay with you for the rest of your life. They can be painful and they can also kill you.
Protect yourself. Respect yourself. Go to planned parenthood and get checked for stds and get yourself some rubbers!