Unintended pregnancies are pregnancies that were<unk>  at the time of conception, these are sometimes divided into<unk> es and those that are mistimed. Worldwide, 38% of pregnancies were unintended in 1999 (some 80 million unintended pregnancies in 1999).  Unintended pregnancies are the primary cause of induced abortion, resulting in about 42 million induced abortions.  Unintended pregnancy is linked to numerous maternal and child health problems.
The use of modern contraceptive methods has greatly reduced the incidence of unintended pregnancy, particularly in more developed countries.  However the United States has an unusually high rate of unintended pregnancy, especially among the poor.
Unwanted pregnancy
Postpartum thyroid dysfunction
High risk pregnancy
Complications of pregnancy
Pregnancy termination complications
Cardiac disease in pregnancy
Pregnancy
Anovulation