no
This is a game of chance. Maybe you will and maybe you won't. Is it worth it ? Always wrap up if you want to try safe. Even then there is a chance it will fail and she gets pregnant.
Every time you have sex, you need to be extremely careful. You should always use protection, such as condoms, birth control, etc. You are at a greater chance of becoming pregnant by having...
Define "sex". If you mean the traditional penis-and-vagina version, you cannot get pregnant if you remain abstinent. Really, abstinence is the only sure-fire way to prevent pregnancy. For further...