The cause of premarital pregnancy is having sex, just like marital pregnancy.
Early pregnancy happens because they are not using birth control. Most people have "premarital" sex, not just college students.
Pregnancy before marriage or holy union.
Many, many negative consequences. Your relationship is supposed to be emotional before marriage and phyical after marriage. It's one of the rewards of marriage. The Bible forbids premarital sex.
Premarital means before marriage.
Premarital relationships are relationships before marriage.
It can not cause pregnancy.
Unprotected sex causes pregnancy.
Yes, there is no law against premarital sex in Germany.
Pregnancy.
sex
Pregnancy.
The same thing that causes pregnancy after menstruation: sex.