The pregnancy can occurs due to sexual intercourse between male and female. The chances are more for sexual intercourse without any birth control tools. If you are using the proper birth control tools and than chances of the pregnancy get minimize. But some time contact between female genital are and male sperm, anal sex. In short if the man and woman sperm come into contact with each other resulting into a pregnancy.
It is essential to avoid such types of activities or behaviors that chances of the pregnancy get increases. It is better do it with using the safe and secure method.
It is essential to have a sex with proper protection. There are many birth control tools available in the market; you can use the suitable birth control tools as you like most.
