Yes, if it leaked inside the vagina you could get pregnant. Using condoms with spermicide will cut some of this risk.
Yes. The condom could malfunction.
The protection level using a condom is about 86% ... meaning there is a 14% possibility of the condom failing, rupturing or tearing.
If a guy comes inside the girl, she can get pregnant no matter what, except if they are using contraception [condoms, etc.]
Birth control pills are quite effective.
A condom is good protection, but no birth control is 100% effective.
You might not neccesarily be pregnant, but there is a higher chance than if you actually used a condom, or any other contraceptive..
its possible that could happen