In your thread back in May someone suggested you go on the pill, yet you still are gambling. If you are unwilling to take such a precaution, at least educate yourself when it comes to sex. Last time you asked about the pull out method's reliability (after the deed was done). This time you're unaware of how a condom should be put on / how it fits.

Why you're taking such chances is beyond me. STDs are widespread and teenagers have no business being parents. Please be more responsible.