Thank you for your query on Healthcare Magic.
Due to tears in condom may lead to pregnancy
some times, because sperms may escape from this sites and may cause fertilization of the ovum if you are in unsafe period.
I advise you to use emergency contraception
methods such as morning after pill or i-pill after your doctor prescription and advise.
But in future practice safer and healthy sexual life style to prevent unplanned pregnancy and transmission of sexually transmitted diseases.
Hope I have answered your query.