Just wanted to address a few common pieces of misinformation.
I see a lot of people write trite comments to address anyone who experienced teen pregnancy and/or STDs/STIs.
Common Understanding: Use a condom correctly, prevent STDs/STIs.
Truth: Consistent and correct condom use will definitely strongly reduce your risk of HIV transmission. Herpes and HPV however can easily be transmitted through skin to skin contact in the genital areas that are not covered by a condom. There is NO statistical evidence that the transmission of those infections are reduced by condom use. 20% of the sexually active population over the age of 12 has Herpes 2. Some college campuses estimate that 75% of their students are carrying at least one strain of the HPV virus (not all strains cause genital warts of cervical cancer)
Common Understanding: Typical condom use will greatly reduce your risk of pregnancy.
Truth: It actually IS true, depending on how you choose to look at the numbers. Typical use studies of condoms show that 12 couples out of 100 will experience a pregnancy during the course of one year (typical use). Certainly your chances are better, but how do you determine whether you're on of the 12 or not?
I write this only to stir the pot a little and have people do a little thinking on their own. Please don't assume that this post has anything to do with the morality/appropriate age/married or not/etc of sex. I'm not moralizing, I'm correcting some peoples' misunderstanding of their risk factors.